perfschema 5.6.24

including the big commit
  commit 305130361bf72726de220f3d2b2787395e10be61
  Author: Marc Alff <marc.alff@oracle.com>
  Date:   Tue Feb 10 11:31:32 2015 +0100

      WL#8354 BACKPORT DIGEST IMPROVEMENTS TO MYSQL 5.6

(with the following commits) and related changes in sql/

151 files changed, 2138 insertions, 1681 deletions

diff --git a/.gitignore b/.gitignore
index 768872b9064..e7871c66357 100644
--- a/.gitignore
+++ b/.gitignore
@@ -136,6 +136,8 @@ sql-bench/test-select
 sql-bench/test-table-elimination
 sql-bench/test-transactions
 sql-bench/test-wisconsin
+sql/lex_token.h
+sql/gen_lex_token
 sql/gen_lex_hash
 sql/lex_hash.h
 sql/mysql_tzinfo_to_sql
@@ -164,8 +166,6 @@ storage/myisam/myisamlog
 storage/myisam/myisampack
 storage/myisam/rt_test
 storage/myisam/sp_test
-storage/perfschema/gen_pfs_lex_token
-storage/perfschema/pfs_lex_token.h
 storage/tokudb/ft-index/buildheader/db.h
 storage/tokudb/ft-index/buildheader/make_tdb
 storage/tokudb/ft-index/buildheader/runcat.sh
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c7f07d93add..b274f80b773 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -443,7 +443,7 @@ ADD_SUBDIRECTORY(packaging/solaris)
 IF(NOT CMAKE_CROSSCOMPILING)
   SET(EXPORTED comp_err comp_sql factorial)
   IF(NOT WITHOUT_SERVER)
-    SET(EXPORTED ${EXPORTED} gen_lex_hash gen_pfs_lex_token)
+    SET(EXPORTED ${EXPORTED} gen_lex_hash gen_lex_token)
   ENDIF()
   # minimal target to build only binaries for export
   ADD_CUSTOM_TARGET(import_executables DEPENDS ${EXPORTED})
diff --git a/include/mysql/psi/mysql_statement.h b/include/mysql/psi/mysql_statement.h
index d7a76ee25e4..3d5943fa55a 100644
--- a/include/mysql/psi/mysql_statement.h
+++ b/include/mysql/psi/mysql_statement.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.   
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.   
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -41,7 +41,6 @@
   do {} while (0)
 #endif
 
-#ifdef HAVE_PSI_STATEMENT_INTERFACE
 #ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
   #define MYSQL_DIGEST_START(LOCKER) \
     inline_mysql_digest_start(LOCKER)
@@ -49,17 +48,13 @@
   #define MYSQL_DIGEST_START(LOCKER) \
     NULL
 #endif
-#else
-  #define MYSQL_DIGEST_START(LOCKER) \
-    NULL
-#endif
 
 #ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
-  #define MYSQL_ADD_TOKEN(LOCKER, T, Y) \
-    inline_mysql_add_token(LOCKER, T, Y)
+  #define MYSQL_DIGEST_END(LOCKER, DIGEST) \
+    inline_mysql_digest_end(LOCKER, DIGEST)
 #else
-  #define MYSQL_ADD_TOKEN(LOCKER, T, Y) \
-    NULL
+  #define MYSQL_DIGEST_END(LOCKER, DIGEST) \
+    do {} while (0)
 #endif
 
 #ifdef HAVE_PSI_STATEMENT_INTERFACE
@@ -132,20 +127,17 @@ inline_mysql_digest_start(PSI_statement_locker *locker)
   PSI_digest_locker* digest_locker= NULL;
 
   if (likely(locker != NULL))
-    digest_locker= PSI_STATEMENT_CALL(digest_start)(locker);
+    digest_locker= PSI_DIGEST_CALL(digest_start)(locker);
   return digest_locker;
 }
 #endif
 
 #ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
-static inline struct PSI_digest_locker *
-inline_mysql_add_token(PSI_digest_locker *locker, uint token,
-                       void *yylval)
+static inline void
+inline_mysql_digest_end(PSI_digest_locker *locker, const sql_digest_storage *digest)
 {
   if (likely(locker != NULL))
-    locker= PSI_STATEMENT_CALL(digest_add_token)(locker, token,
-                                      (OPAQUE_LEX_YYSTYPE*)yylval);
-  return locker;
+    PSI_DIGEST_CALL(digest_end)(locker, digest);
 }
 #endif
 
diff --git a/include/mysql/psi/psi.h b/include/mysql/psi/psi.h
index 30f2709be0f..49202c4e88f 100644
--- a/include/mysql/psi/psi.h
+++ b/include/mysql/psi/psi.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -43,18 +43,8 @@
 C_MODE_START
 
 struct TABLE_SHARE;
-/*
-  There are 3 known bison parsers in the server:
-  - (1) the SQL parser itself, sql/sql_yacc.yy
-  - (2) storage/innobase/fts/fts0pars.y
-  - (3) storage/innobase/pars/pars0grm.y
-  What is instrumented here are the tokens from the SQL query text (1),
-  to make digests.
-  Now, to avoid name pollution and conflicts with different YYSTYPE definitions,
-  an opaque structure is used here.
-  The real type to use when invoking the digest api is LEX_YYSTYPE.
-*/
-struct OPAQUE_LEX_YYSTYPE;
+
+struct sql_digest_storage;
 
 /**
   @file mysql/psi/psi.h
@@ -952,29 +942,6 @@ struct PSI_table_locker_state_v1
   uint m_index;
 };
 
-#define PSI_MAX_DIGEST_STORAGE_SIZE 1024
-
-/**
-  Structure to store token count/array for a statement
-  on which digest is to be calculated.
-*/
-struct PSI_digest_storage
-{
-  my_bool m_full;
-  int m_byte_count;
-  /** Character set number. */
-  uint m_charset_number;
-  unsigned char m_token_array[PSI_MAX_DIGEST_STORAGE_SIZE];
-};
-typedef struct PSI_digest_storage PSI_digest_storage;
-
-struct PSI_digest_locker_state
-{
-  int m_last_id_index;
-  PSI_digest_storage m_digest_storage;
-};
-typedef struct PSI_digest_locker_state PSI_digest_locker_state;
-
 /* Duplicate of NAME_LEN, to avoid dependency on mysql_com.h */
 #define PSI_SCHEMA_NAME_LEN (64 * 3)
 
@@ -1037,7 +1004,7 @@ struct PSI_statement_locker_state_v1
   /** Metric, number of sort scans. */
   ulong m_sort_scan;
   /** Statement digest. */
-  PSI_digest_locker_state m_digest_state;
+  const struct sql_digest_storage *m_digest;
   /** Current schema name. */
   char m_schema_name[PSI_SCHEMA_NAME_LEN];
   /** Length in bytes of @c m_schema_name. */
@@ -1902,11 +1869,15 @@ typedef void (*set_socket_info_v1_t)(struct PSI_socket *socket,
 */
 typedef void (*set_socket_thread_owner_v1_t)(struct PSI_socket *socket);
 
+/**
+  Get a digest locker for the current statement.
+  @param locker a statement locker for the running thread
+*/
 typedef struct PSI_digest_locker * (*digest_start_v1_t)
   (struct PSI_statement_locker *locker);
 
-typedef struct PSI_digest_locker* (*digest_add_token_v1_t)
-  (struct PSI_digest_locker *locker, uint token, struct OPAQUE_LEX_YYSTYPE *yylval);
+typedef void (*digest_end_v1_t)
+  (struct PSI_digest_locker *locker, const struct sql_digest_storage *digest);
 
 /**
   Stores an array of connection attributes
@@ -2118,8 +2089,8 @@ struct PSI_v1
   set_socket_thread_owner_v1_t set_socket_thread_owner;
   /** @sa digest_start_v1_t. */
   digest_start_v1_t digest_start;
-  /** @sa digest_add_token_v1_t. */
-  digest_add_token_v1_t digest_add_token;
+  /** @sa digest_end_v1_t. */
+  digest_end_v1_t digest_end;
   /** @sa set_thread_connect_attrs_v1_t. */
   set_thread_connect_attrs_v1_t set_thread_connect_attrs;
 };
@@ -2414,6 +2385,10 @@ extern MYSQL_PLUGIN_IMPORT PSI *PSI_server;
 #define PSI_STATEMENT_CALL(M) PSI_DYNAMIC_CALL(M)
 #endif
 
+#ifndef PSI_DIGEST_CALL
+#define PSI_DIGEST_CALL(M) PSI_DYNAMIC_CALL(M)
+#endif
+
 #ifndef PSI_TABLE_CALL
 #define PSI_TABLE_CALL(M) PSI_DYNAMIC_CALL(M)
 #endif
diff --git a/include/mysql/psi/psi_abi_v0.h.pp b/include/mysql/psi/psi_abi_v0.h.pp
index b46b38ed144..17d61016a68 100644
--- a/include/mysql/psi/psi_abi_v0.h.pp
+++ b/include/mysql/psi/psi_abi_v0.h.pp
@@ -1,7 +1,7 @@
 #include "mysql/psi/psi.h"
 C_MODE_START
 struct TABLE_SHARE;
-struct OPAQUE_LEX_YYSTYPE;
+struct sql_digest_storage;
 struct PSI_mutex;
 typedef struct PSI_mutex PSI_mutex;
 struct PSI_rwlock;
diff --git a/include/mysql/psi/psi_abi_v1.h.pp b/include/mysql/psi/psi_abi_v1.h.pp
index fa2bf724b5e..898b9871d2e 100644
--- a/include/mysql/psi/psi_abi_v1.h.pp
+++ b/include/mysql/psi/psi_abi_v1.h.pp
@@ -1,7 +1,7 @@
 #include "mysql/psi/psi.h"
 C_MODE_START
 struct TABLE_SHARE;
-struct OPAQUE_LEX_YYSTYPE;
+struct sql_digest_storage;
 struct PSI_mutex;
 typedef struct PSI_mutex PSI_mutex;
 struct PSI_rwlock;
@@ -241,20 +241,6 @@ struct PSI_table_locker_state_v1
   void *m_wait;
   uint m_index;
 };
-struct PSI_digest_storage
-{
-  my_bool m_full;
-  int m_byte_count;
-  uint m_charset_number;
-  unsigned char m_token_array[1024];
-};
-typedef struct PSI_digest_storage PSI_digest_storage;
-struct PSI_digest_locker_state
-{
-  int m_last_id_index;
-  PSI_digest_storage m_digest_storage;
-};
-typedef struct PSI_digest_locker_state PSI_digest_locker_state;
 struct PSI_statement_locker_state_v1
 {
   my_bool m_discarded;
@@ -280,7 +266,7 @@ struct PSI_statement_locker_state_v1
   ulong m_sort_range;
   ulong m_sort_rows;
   ulong m_sort_scan;
-  PSI_digest_locker_state m_digest_state;
+  const struct sql_digest_storage *m_digest;
   char m_schema_name[(64 * 3)];
   uint m_schema_name_length;
 };
@@ -508,8 +494,8 @@ typedef void (*set_socket_info_v1_t)(struct PSI_socket *socket,
 typedef void (*set_socket_thread_owner_v1_t)(struct PSI_socket *socket);
 typedef struct PSI_digest_locker * (*digest_start_v1_t)
   (struct PSI_statement_locker *locker);
-typedef struct PSI_digest_locker* (*digest_add_token_v1_t)
-  (struct PSI_digest_locker *locker, uint token, struct OPAQUE_LEX_YYSTYPE *yylval);
+typedef void (*digest_end_v1_t)
+  (struct PSI_digest_locker *locker, const struct sql_digest_storage *digest);
 typedef int (*set_thread_connect_attrs_v1_t)(const char *buffer, uint length,
                                              const void *from_cs);
 struct PSI_v1
@@ -610,7 +596,7 @@ struct PSI_v1
   set_socket_info_v1_t set_socket_info;
   set_socket_thread_owner_v1_t set_socket_thread_owner;
   digest_start_v1_t digest_start;
-  digest_add_token_v1_t digest_add_token;
+  digest_end_v1_t digest_end;
   set_thread_connect_attrs_v1_t set_thread_connect_attrs;
 };
 typedef struct PSI_v1 PSI;
diff --git a/include/mysql/psi/psi_abi_v2.h.pp b/include/mysql/psi/psi_abi_v2.h.pp
index 458013b43e4..c3dba0a9b76 100644
--- a/include/mysql/psi/psi_abi_v2.h.pp
+++ b/include/mysql/psi/psi_abi_v2.h.pp
@@ -1,7 +1,7 @@
 #include "mysql/psi/psi.h"
 C_MODE_START
 struct TABLE_SHARE;
-struct OPAQUE_LEX_YYSTYPE;
+struct sql_digest_storage;
 struct PSI_mutex;
 typedef struct PSI_mutex PSI_mutex;
 struct PSI_rwlock;
diff --git a/libmysqld/CMakeLists.txt b/libmysqld/CMakeLists.txt
index 0920be53baf..a244a41f4f6 100644
--- a/libmysqld/CMakeLists.txt
+++ b/libmysqld/CMakeLists.txt
@@ -44,7 +44,7 @@ SET(SQL_EMBEDDED_SOURCES emb_qcache.cc libmysqld.c lib_sql.cc
            ../sql-common/client_plugin.c ../sql-common/mysql_async.c
            ../sql/password.c ../sql/discover.cc ../sql/derror.cc 
            ../sql/field.cc ../sql/field_conv.cc
-           ../sql/filesort_utils.cc
+           ../sql/filesort_utils.cc ../sql/sql_digest.cc
            ../sql/filesort.cc ../sql/gstream.cc ../sql/slave.cc
            ../sql/signal_handler.cc
            ../sql/handler.cc ../sql/hash_filo.cc ../sql/hostname.cc 
diff --git a/mysql-test/r/mysqld--help.result b/mysql-test/r/mysqld--help.result
index 360421514ac..0b8fb8e3d05 100644
--- a/mysql-test/r/mysqld--help.result
+++ b/mysql-test/r/mysqld--help.result
@@ -405,6 +405,8 @@ The following options may be given as the first argument:
  Don't start more than this number of threads to handle
  INSERT DELAYED statements. If set to zero INSERT DELAYED
  will be not used
+ --max-digest-length=# 
+ Maximum length considered for digest text.
  --max-error-count=# Max number of errors/warnings to store for a statement
  --max-heap-table-size=# 
  Don't allow creation of heap tables bigger than this
@@ -1172,6 +1174,7 @@ max-binlog-stmt-cache-size 18446744073709547520
 max-connect-errors 100
 max-connections 151
 max-delayed-threads 20
+max-digest-length 1024
 max-error-count 64
 max-heap-table-size 16777216
 max-join-size 18446744073709551615
diff --git a/mysql-test/suite/perfschema/include/sizing_auto.inc b/mysql-test/suite/perfschema/include/sizing_auto.inc
index 4c3451ce8b5..3bb4db2276f 100644
--- a/mysql-test/suite/perfschema/include/sizing_auto.inc
+++ b/mysql-test/suite/perfschema/include/sizing_auto.inc
@@ -4,13 +4,21 @@ show variables like "table_open_cache";
 show variables like "max_connections";
 # open_files_limit depends on OS configuration (ulimit -n)
 #show variables like "open_files_limit";
-show variables like "%performance_schema%";
+show variables where
+    `Variable_name` != "performance_schema_max_statement_classes" and
+    `Variable_name` like "performance_schema%";
 show status like "%performance_schema%";
 
 # Each test script should provide a different test.cnf file,
 # with different settings.
 # This output will show the sizes computed automatically.
 # Note that this output is very dependent on the platform.
+# The output of SHOW ENGINE PERFORMANCE_SCHEMA STATUS
+# is very dependent on the platform,
+# so it is not printed here to ensure stability of the .results files.
+# To troubleshoot the performance schema memory consumption at different
+# configuration settings, comment the following line.
+# Debug only:
 
-show engine performance_schema status;
+# show engine performance_schema status;
 
diff --git a/mysql-test/suite/perfschema/include/socket_event.inc b/mysql-test/suite/perfschema/include/socket_event.inc
index ba81c37d5df..96c61045986 100644
--- a/mysql-test/suite/perfschema/include/socket_event.inc
+++ b/mysql-test/suite/perfschema/include/socket_event.inc
@@ -126,7 +126,7 @@ if($is_connect)
       # Connect is visible.
       # We hope that sleep 1 is long enough so that PERFORMANCE_SCHEMA
       # can remove this row before we collect the after action state.
-      let $wait_timeou= 5;
+      let $wait_timeout= 5;
       let $wait_condition=
       SELECT COUNT(*) = 0
       $part;
diff --git a/mysql-test/suite/perfschema/include/start_server_common.inc b/mysql-test/suite/perfschema/include/start_server_common.inc
index d15c3d48ded..41dcfd8ecb5 100644
--- a/mysql-test/suite/perfschema/include/start_server_common.inc
+++ b/mysql-test/suite/perfschema/include/start_server_common.inc
@@ -68,7 +68,9 @@ select * from performance_schema.users;
 --enable_result_log
 
 # This has a stable output, printing the result:
-show variables like "performance_schema%";
+show variables where
+    `Variable_name` != "performance_schema_max_statement_classes" and
+    `Variable_name` like "performance_schema%";
 
 # This has an unrepeatable output, it does depends too much on
 # - the platform hardware (sizeof structures, padding)
diff --git a/mysql-test/suite/perfschema/include/table_aggregate_load.inc b/mysql-test/suite/perfschema/include/table_aggregate_load.inc
index 242768ead9e..f42ebe1fc76 100644
--- a/mysql-test/suite/perfschema/include/table_aggregate_load.inc
+++ b/mysql-test/suite/perfschema/include/table_aggregate_load.inc
@@ -29,7 +29,9 @@ truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
 
 # Check the configuration is ok
-show variables like "performance_schema%";
+show variables where
+    `Variable_name` != "performance_schema_max_statement_classes" and
+    `Variable_name` like "performance_schema%";
 show status like "performance_schema%";
 
 echo "================== Step 1 ==================";
diff --git a/mysql-test/suite/perfschema/r/digest_null_literal.result b/mysql-test/suite/perfschema/r/digest_null_literal.result
new file mode 100644
index 00000000000..b0cefbbbaaf
--- /dev/null
+++ b/mysql-test/suite/perfschema/r/digest_null_literal.result
@@ -0,0 +1,27 @@
+TRUNCATE TABLE performance_schema.events_statements_summary_by_digest;
+NULL
+NULL
+NULL
+NULL
+NULL	NULL
+NULL	NULL
+NULL	NULL	NULL	1	2	3	NULL	NULL
+NULL	NULL	NULL	1	2	3	NULL	NULL
+1 IS NULL
+0
+2 IS NOT NULL
+1
+1 IS NULL	2 IS NULL	3 IS NOT NULL	4 IS NOT NULL
+0	0	1	1
+SELECT SCHEMA_NAME, DIGEST_TEXT, COUNT_STAR
+FROM performance_schema.events_statements_summary_by_digest;
+SCHEMA_NAME	DIGEST_TEXT	COUNT_STAR
+test	TRUNCATE TABLE performance_schema . events_statements_summary_by_digest 	1
+test	SELECT ? 	1
+test	SELECT ? FROM DUAL 	1
+test	SELECT ?, ... 	2
+test	SELECT ? IS NULL 	1
+test	SELECT ? IS NOT NULL 	1
+test	SELECT ? IS NULL , ? IS NULL , ? IS NOT NULL , ? IS NOT NULL 	1
+test	CREATE TABLE foo ( a INTEGER DEFAULT ? , b INTEGER NOT NULL DEFAULT ? , c INTEGER NOT NULL ) 	1
+test	DROP TABLE foo 	1
diff --git a/mysql-test/suite/perfschema/r/ortho_iter.result b/mysql-test/suite/perfschema/r/ortho_iter.result
index dafce4bf573..9081bfe5882 100644
--- a/mysql-test/suite/perfschema/r/ortho_iter.result
+++ b/mysql-test/suite/perfschema/r/ortho_iter.result
@@ -94,7 +94,9 @@ close pfs_cursor;
 signal sqlstate '01000' set message_text='Done', mysql_errno=12000;
 end
 $
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -118,7 +120,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
@@ -127,31 +128,6 @@ performance_schema_session_connect_attrs_size	2048
 performance_schema_setup_actors_size	100
 performance_schema_setup_objects_size	100
 performance_schema_users_size	100
-show status like "performance_schema%";
-Variable_name	Value
-Performance_schema_accounts_lost	0
-Performance_schema_cond_classes_lost	0
-Performance_schema_cond_instances_lost	0
-Performance_schema_digest_lost	0
-Performance_schema_file_classes_lost	0
-Performance_schema_file_handles_lost	0
-Performance_schema_file_instances_lost	0
-Performance_schema_hosts_lost	0
-Performance_schema_locker_lost	0
-Performance_schema_mutex_classes_lost	0
-Performance_schema_mutex_instances_lost	0
-Performance_schema_rwlock_classes_lost	0
-Performance_schema_rwlock_instances_lost	0
-Performance_schema_session_connect_attrs_lost	0
-Performance_schema_socket_classes_lost	0
-Performance_schema_socket_instances_lost	0
-Performance_schema_stage_classes_lost	0
-Performance_schema_statement_classes_lost	0
-Performance_schema_table_handles_lost	0
-Performance_schema_table_instances_lost	0
-Performance_schema_thread_classes_lost	0
-Performance_schema_thread_instances_lost	0
-Performance_schema_users_lost	0
 call check_instrument("wait/synch/mutex/");
 instr_name	is_wait	is_stage	is_statement
 wait/synch/mutex/	1	0	0
diff --git a/mysql-test/suite/perfschema/r/privilege_table_io.result b/mysql-test/suite/perfschema/r/privilege_table_io.result
index 838d17e61fe..126b2a58fae 100644
--- a/mysql-test/suite/perfschema/r/privilege_table_io.result
+++ b/mysql-test/suite/perfschema/r/privilege_table_io.result
@@ -22,7 +22,9 @@ flush privileges;
 insert into test.marker set a = 1;
 insert into test.marker set a = 1;
 insert into test.marker set a = 1;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -46,7 +48,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/sizing_default.result b/mysql-test/suite/perfschema/r/sizing_default.result
index ef7f7069c19..d7c4e321204 100644
--- a/mysql-test/suite/perfschema/r/sizing_default.result
+++ b/mysql-test/suite/perfschema/r/sizing_default.result
@@ -7,7 +7,9 @@ table_open_cache	2000
 show variables like "max_connections";
 Variable_name	Value
 max_connections	151
-show variables like "%performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -31,7 +33,6 @@ performance_schema_max_rwlock_instances	9102
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	322
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	168
 performance_schema_max_table_handles	4000
 performance_schema_max_table_instances	12500
 performance_schema_max_thread_classes	50
@@ -65,160 +66,3 @@ Performance_schema_table_instances_lost	0
 Performance_schema_thread_classes_lost	0
 Performance_schema_thread_instances_lost	0
 Performance_schema_users_lost	0
-show engine performance_schema status;
-Type	Name	Status
-performance_schema	events_waits_current.row_size	184
-performance_schema	events_waits_current.row_count	2412
-performance_schema	events_waits_history.row_size	184
-performance_schema	events_waits_history.row_count	4020
-performance_schema	events_waits_history.memory	739680
-performance_schema	events_waits_history_long.row_size	184
-performance_schema	events_waits_history_long.row_count	10000
-performance_schema	events_waits_history_long.memory	1840000
-performance_schema	(pfs_mutex_class).row_size	256
-performance_schema	(pfs_mutex_class).row_count	200
-performance_schema	(pfs_mutex_class).memory	51200
-performance_schema	(pfs_rwlock_class).row_size	320
-performance_schema	(pfs_rwlock_class).row_count	40
-performance_schema	(pfs_rwlock_class).memory	12800
-performance_schema	(pfs_cond_class).row_size	256
-performance_schema	(pfs_cond_class).row_count	80
-performance_schema	(pfs_cond_class).memory	20480
-performance_schema	(pfs_thread_class).row_size	192
-performance_schema	(pfs_thread_class).row_count	50
-performance_schema	(pfs_thread_class).memory	9600
-performance_schema	(pfs_file_class).row_size	320
-performance_schema	(pfs_file_class).row_count	50
-performance_schema	(pfs_file_class).memory	16000
-performance_schema	mutex_instances.row_size	128
-performance_schema	mutex_instances.row_count	15906
-performance_schema	mutex_instances.memory	2035968
-performance_schema	rwlock_instances.row_size	192
-performance_schema	rwlock_instances.row_count	9102
-performance_schema	rwlock_instances.memory	1747584
-performance_schema	cond_instances.row_size	128
-performance_schema	cond_instances.row_count	3504
-performance_schema	cond_instances.memory	448512
-performance_schema	threads.row_size	2816
-performance_schema	threads.row_count	402
-performance_schema	threads.memory	1132032
-performance_schema	file_instances.row_size	704
-performance_schema	file_instances.row_count	7693
-performance_schema	file_instances.memory	5415872
-performance_schema	(pfs_file_handle).row_size	8
-performance_schema	(pfs_file_handle).row_count	32768
-performance_schema	(pfs_file_handle).memory	262144
-performance_schema	events_waits_summary_by_thread_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_thread_by_event_name.row_count	153966
-performance_schema	events_waits_summary_by_thread_by_event_name.memory	4926912
-performance_schema	(pfs_table_share).row_size	22208
-performance_schema	(pfs_table_share).row_count	12500
-performance_schema	(pfs_table_share).memory	277600000
-performance_schema	(pfs_table).row_size	9280
-performance_schema	(pfs_table).row_count	4000
-performance_schema	(pfs_table).memory	37120000
-performance_schema	setup_actors.row_size	256
-performance_schema	setup_actors.row_count	100
-performance_schema	setup_actors.memory	25600
-performance_schema	setup_objects.row_size	448
-performance_schema	setup_objects.row_count	100
-performance_schema	setup_objects.memory	44800
-performance_schema	(pfs_account).row_size	256
-performance_schema	(pfs_account).row_count	100
-performance_schema	(pfs_account).memory	25600
-performance_schema	events_waits_summary_by_account_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_account_by_event_name.row_count	38300
-performance_schema	events_waits_summary_by_account_by_event_name.memory	1225600
-performance_schema	events_waits_summary_by_user_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_user_by_event_name.row_count	38300
-performance_schema	events_waits_summary_by_user_by_event_name.memory	1225600
-performance_schema	events_waits_summary_by_host_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_host_by_event_name.row_count	38300
-performance_schema	events_waits_summary_by_host_by_event_name.memory	1225600
-performance_schema	(pfs_user).row_size	128
-performance_schema	(pfs_user).row_count	100
-performance_schema	(pfs_user).memory	12800
-performance_schema	(pfs_host).row_size	128
-performance_schema	(pfs_host).row_count	100
-performance_schema	(pfs_host).memory	12800
-performance_schema	(pfs_stage_class).row_size	256
-performance_schema	(pfs_stage_class).row_count	150
-performance_schema	(pfs_stage_class).memory	38400
-performance_schema	events_stages_history.row_size	88
-performance_schema	events_stages_history.row_count	4020
-performance_schema	events_stages_history.memory	353760
-performance_schema	events_stages_history_long.row_size	88
-performance_schema	events_stages_history_long.row_count	10000
-performance_schema	events_stages_history_long.memory	880000
-performance_schema	events_stages_summary_by_thread_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_thread_by_event_name.row_count	60300
-performance_schema	events_stages_summary_by_thread_by_event_name.memory	1929600
-performance_schema	events_stages_summary_global_by_event_name.row_size	32
-performance_schema	events_stages_summary_global_by_event_name.row_count	150
-performance_schema	events_stages_summary_global_by_event_name.memory	4800
-performance_schema	events_stages_summary_by_account_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_account_by_event_name.row_count	15000
-performance_schema	events_stages_summary_by_account_by_event_name.memory	480000
-performance_schema	events_stages_summary_by_user_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_user_by_event_name.row_count	15000
-performance_schema	events_stages_summary_by_user_by_event_name.memory	480000
-performance_schema	events_stages_summary_by_host_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_host_by_event_name.row_count	15000
-performance_schema	events_stages_summary_by_host_by_event_name.memory	480000
-performance_schema	(pfs_statement_class).row_size	192
-performance_schema	(pfs_statement_class).row_count	168
-performance_schema	(pfs_statement_class).memory	32256
-performance_schema	events_statements_history.row_size	3024
-performance_schema	events_statements_history.row_count	4020
-performance_schema	events_statements_history.memory	12156480
-performance_schema	events_statements_history_long.row_size	3024
-performance_schema	events_statements_history_long.row_count	10000
-performance_schema	events_statements_history_long.memory	30240000
-performance_schema	events_statements_summary_by_thread_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_thread_by_event_name.row_count	67536
-performance_schema	events_statements_summary_by_thread_by_event_name.memory	12426624
-performance_schema	events_statements_summary_global_by_event_name.row_size	184
-performance_schema	events_statements_summary_global_by_event_name.row_count	168
-performance_schema	events_statements_summary_global_by_event_name.memory	30912
-performance_schema	events_statements_summary_by_account_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_account_by_event_name.row_count	16800
-performance_schema	events_statements_summary_by_account_by_event_name.memory	3091200
-performance_schema	events_statements_summary_by_user_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_user_by_event_name.row_count	16800
-performance_schema	events_statements_summary_by_user_by_event_name.memory	3091200
-performance_schema	events_statements_summary_by_host_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_host_by_event_name.row_count	16800
-performance_schema	events_statements_summary_by_host_by_event_name.memory	3091200
-performance_schema	events_statements_current.row_size	3024
-performance_schema	events_statements_current.row_count	402
-performance_schema	events_statements_current.memory	1215648
-performance_schema	(pfs_socket_class).row_size	320
-performance_schema	(pfs_socket_class).row_count	10
-performance_schema	(pfs_socket_class).memory	3200
-performance_schema	socket_instances.row_size	320
-performance_schema	socket_instances.row_count	322
-performance_schema	socket_instances.memory	103040
-performance_schema	events_statements_summary_by_digest.row_size	1472
-performance_schema	events_statements_summary_by_digest.row_count	10000
-performance_schema	events_statements_summary_by_digest.memory	14720000
-performance_schema	session_connect_attrs.row_size	402
-performance_schema	session_connect_attrs.row_count	512
-performance_schema	session_connect_attrs.memory	205824
-performance_schema	(account_hash).count	2
-performance_schema	(account_hash).size	100
-performance_schema	(digest_hash).count	0
-performance_schema	(digest_hash).size	10000
-performance_schema	(filename_hash).count	0
-performance_schema	(filename_hash).size	7693
-performance_schema	(host_hash).count	2
-performance_schema	(host_hash).size	100
-performance_schema	(setup_actor_hash).count	1
-performance_schema	(setup_actor_hash).size	100
-performance_schema	(setup_object_hash).count	4
-performance_schema	(setup_object_hash).size	100
-performance_schema	(table_share_hash).count	80
-performance_schema	(table_share_hash).size	12500
-performance_schema	(user_hash).count	2
-performance_schema	(user_hash).size	100
-performance_schema	host_cache.size	336
-performance_schema	performance_schema.memory	422231328
diff --git a/mysql-test/suite/perfschema/r/sizing_high.result b/mysql-test/suite/perfschema/r/sizing_high.result
index 4d63c970782..c7c7b065992 100644
--- a/mysql-test/suite/perfschema/r/sizing_high.result
+++ b/mysql-test/suite/perfschema/r/sizing_high.result
@@ -7,7 +7,9 @@ table_open_cache	400
 show variables like "max_connections";
 Variable_name	Value
 max_connections	200
-show variables like "%performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -31,7 +33,6 @@ performance_schema_max_rwlock_instances	30800
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	420
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	168
 performance_schema_max_table_handles	800
 performance_schema_max_table_instances	12500
 performance_schema_max_thread_classes	50
@@ -65,160 +66,3 @@ Performance_schema_table_instances_lost	0
 Performance_schema_thread_classes_lost	0
 Performance_schema_thread_instances_lost	0
 Performance_schema_users_lost	0
-show engine performance_schema status;
-Type	Name	Status
-performance_schema	events_waits_current.row_size	184
-performance_schema	events_waits_current.row_count	3000
-performance_schema	events_waits_history.row_size	184
-performance_schema	events_waits_history.row_count	5000
-performance_schema	events_waits_history.memory	920000
-performance_schema	events_waits_history_long.row_size	184
-performance_schema	events_waits_history_long.row_count	10000
-performance_schema	events_waits_history_long.memory	1840000
-performance_schema	(pfs_mutex_class).row_size	256
-performance_schema	(pfs_mutex_class).row_count	200
-performance_schema	(pfs_mutex_class).memory	51200
-performance_schema	(pfs_rwlock_class).row_size	320
-performance_schema	(pfs_rwlock_class).row_count	40
-performance_schema	(pfs_rwlock_class).memory	12800
-performance_schema	(pfs_cond_class).row_size	256
-performance_schema	(pfs_cond_class).row_count	80
-performance_schema	(pfs_cond_class).memory	20480
-performance_schema	(pfs_thread_class).row_size	192
-performance_schema	(pfs_thread_class).row_count	50
-performance_schema	(pfs_thread_class).memory	9600
-performance_schema	(pfs_file_class).row_size	320
-performance_schema	(pfs_file_class).row_count	50
-performance_schema	(pfs_file_class).memory	16000
-performance_schema	mutex_instances.row_size	128
-performance_schema	mutex_instances.row_count	52200
-performance_schema	mutex_instances.memory	6681600
-performance_schema	rwlock_instances.row_size	192
-performance_schema	rwlock_instances.row_count	30800
-performance_schema	rwlock_instances.memory	5913600
-performance_schema	cond_instances.row_size	128
-performance_schema	cond_instances.row_count	10900
-performance_schema	cond_instances.memory	1395200
-performance_schema	threads.row_size	2816
-performance_schema	threads.row_count	500
-performance_schema	threads.memory	1408000
-performance_schema	file_instances.row_size	704
-performance_schema	file_instances.row_count	23385
-performance_schema	file_instances.memory	16463040
-performance_schema	(pfs_file_handle).row_size	8
-performance_schema	(pfs_file_handle).row_count	32768
-performance_schema	(pfs_file_handle).memory	262144
-performance_schema	events_waits_summary_by_thread_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_thread_by_event_name.row_count	191500
-performance_schema	events_waits_summary_by_thread_by_event_name.memory	6128000
-performance_schema	(pfs_table_share).row_size	22208
-performance_schema	(pfs_table_share).row_count	12500
-performance_schema	(pfs_table_share).memory	277600000
-performance_schema	(pfs_table).row_size	9280
-performance_schema	(pfs_table).row_count	800
-performance_schema	(pfs_table).memory	7424000
-performance_schema	setup_actors.row_size	256
-performance_schema	setup_actors.row_count	100
-performance_schema	setup_actors.memory	25600
-performance_schema	setup_objects.row_size	448
-performance_schema	setup_objects.row_count	100
-performance_schema	setup_objects.memory	44800
-performance_schema	(pfs_account).row_size	256
-performance_schema	(pfs_account).row_count	100
-performance_schema	(pfs_account).memory	25600
-performance_schema	events_waits_summary_by_account_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_account_by_event_name.row_count	38300
-performance_schema	events_waits_summary_by_account_by_event_name.memory	1225600
-performance_schema	events_waits_summary_by_user_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_user_by_event_name.row_count	38300
-performance_schema	events_waits_summary_by_user_by_event_name.memory	1225600
-performance_schema	events_waits_summary_by_host_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_host_by_event_name.row_count	38300
-performance_schema	events_waits_summary_by_host_by_event_name.memory	1225600
-performance_schema	(pfs_user).row_size	128
-performance_schema	(pfs_user).row_count	100
-performance_schema	(pfs_user).memory	12800
-performance_schema	(pfs_host).row_size	128
-performance_schema	(pfs_host).row_count	100
-performance_schema	(pfs_host).memory	12800
-performance_schema	(pfs_stage_class).row_size	256
-performance_schema	(pfs_stage_class).row_count	150
-performance_schema	(pfs_stage_class).memory	38400
-performance_schema	events_stages_history.row_size	88
-performance_schema	events_stages_history.row_count	5000
-performance_schema	events_stages_history.memory	440000
-performance_schema	events_stages_history_long.row_size	88
-performance_schema	events_stages_history_long.row_count	10000
-performance_schema	events_stages_history_long.memory	880000
-performance_schema	events_stages_summary_by_thread_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_thread_by_event_name.row_count	75000
-performance_schema	events_stages_summary_by_thread_by_event_name.memory	2400000
-performance_schema	events_stages_summary_global_by_event_name.row_size	32
-performance_schema	events_stages_summary_global_by_event_name.row_count	150
-performance_schema	events_stages_summary_global_by_event_name.memory	4800
-performance_schema	events_stages_summary_by_account_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_account_by_event_name.row_count	15000
-performance_schema	events_stages_summary_by_account_by_event_name.memory	480000
-performance_schema	events_stages_summary_by_user_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_user_by_event_name.row_count	15000
-performance_schema	events_stages_summary_by_user_by_event_name.memory	480000
-performance_schema	events_stages_summary_by_host_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_host_by_event_name.row_count	15000
-performance_schema	events_stages_summary_by_host_by_event_name.memory	480000
-performance_schema	(pfs_statement_class).row_size	192
-performance_schema	(pfs_statement_class).row_count	168
-performance_schema	(pfs_statement_class).memory	32256
-performance_schema	events_statements_history.row_size	3024
-performance_schema	events_statements_history.row_count	5000
-performance_schema	events_statements_history.memory	15120000
-performance_schema	events_statements_history_long.row_size	3024
-performance_schema	events_statements_history_long.row_count	10000
-performance_schema	events_statements_history_long.memory	30240000
-performance_schema	events_statements_summary_by_thread_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_thread_by_event_name.row_count	84000
-performance_schema	events_statements_summary_by_thread_by_event_name.memory	15456000
-performance_schema	events_statements_summary_global_by_event_name.row_size	184
-performance_schema	events_statements_summary_global_by_event_name.row_count	168
-performance_schema	events_statements_summary_global_by_event_name.memory	30912
-performance_schema	events_statements_summary_by_account_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_account_by_event_name.row_count	16800
-performance_schema	events_statements_summary_by_account_by_event_name.memory	3091200
-performance_schema	events_statements_summary_by_user_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_user_by_event_name.row_count	16800
-performance_schema	events_statements_summary_by_user_by_event_name.memory	3091200
-performance_schema	events_statements_summary_by_host_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_host_by_event_name.row_count	16800
-performance_schema	events_statements_summary_by_host_by_event_name.memory	3091200
-performance_schema	events_statements_current.row_size	3024
-performance_schema	events_statements_current.row_count	500
-performance_schema	events_statements_current.memory	1512000
-performance_schema	(pfs_socket_class).row_size	320
-performance_schema	(pfs_socket_class).row_count	10
-performance_schema	(pfs_socket_class).memory	3200
-performance_schema	socket_instances.row_size	320
-performance_schema	socket_instances.row_count	420
-performance_schema	socket_instances.memory	134400
-performance_schema	events_statements_summary_by_digest.row_size	1472
-performance_schema	events_statements_summary_by_digest.row_count	10000
-performance_schema	events_statements_summary_by_digest.memory	14720000
-performance_schema	session_connect_attrs.row_size	500
-performance_schema	session_connect_attrs.row_count	512
-performance_schema	session_connect_attrs.memory	256000
-performance_schema	(account_hash).count	2
-performance_schema	(account_hash).size	100
-performance_schema	(digest_hash).count	0
-performance_schema	(digest_hash).size	10000
-performance_schema	(filename_hash).count	0
-performance_schema	(filename_hash).size	23385
-performance_schema	(host_hash).count	2
-performance_schema	(host_hash).size	100
-performance_schema	(setup_actor_hash).count	1
-performance_schema	(setup_actor_hash).size	100
-performance_schema	(setup_object_hash).count	4
-performance_schema	(setup_object_hash).size	100
-performance_schema	(table_share_hash).count	80
-performance_schema	(table_share_hash).size	12500
-performance_schema	(user_hash).count	2
-performance_schema	(user_hash).size	100
-performance_schema	host_cache.size	336
-performance_schema	performance_schema.memory	421925632
diff --git a/mysql-test/suite/perfschema/r/sizing_low.result b/mysql-test/suite/perfschema/r/sizing_low.result
index d5aab2c2df3..213cc0b5f74 100644
--- a/mysql-test/suite/perfschema/r/sizing_low.result
+++ b/mysql-test/suite/perfschema/r/sizing_low.result
@@ -7,7 +7,9 @@ table_open_cache	100
 show variables like "max_connections";
 Variable_name	Value
 max_connections	50
-show variables like "%performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	10
@@ -31,7 +33,6 @@ performance_schema_max_rwlock_instances	1612
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	67
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	168
 performance_schema_max_table_handles	112
 performance_schema_max_table_instances	445
 performance_schema_max_thread_classes	50
@@ -65,160 +66,3 @@ Performance_schema_table_instances_lost	0
 Performance_schema_thread_classes_lost	0
 Performance_schema_thread_instances_lost	0
 Performance_schema_users_lost	0
-show engine performance_schema status;
-Type	Name	Status
-performance_schema	events_waits_current.row_size	184
-performance_schema	events_waits_current.row_count	672
-performance_schema	events_waits_history.row_size	184
-performance_schema	events_waits_history.row_count	560
-performance_schema	events_waits_history.memory	103040
-performance_schema	events_waits_history_long.row_size	184
-performance_schema	events_waits_history_long.row_count	100
-performance_schema	events_waits_history_long.memory	18400
-performance_schema	(pfs_mutex_class).row_size	256
-performance_schema	(pfs_mutex_class).row_count	200
-performance_schema	(pfs_mutex_class).memory	51200
-performance_schema	(pfs_rwlock_class).row_size	320
-performance_schema	(pfs_rwlock_class).row_count	40
-performance_schema	(pfs_rwlock_class).memory	12800
-performance_schema	(pfs_cond_class).row_size	256
-performance_schema	(pfs_cond_class).row_count	80
-performance_schema	(pfs_cond_class).memory	20480
-performance_schema	(pfs_thread_class).row_size	192
-performance_schema	(pfs_thread_class).row_count	50
-performance_schema	(pfs_thread_class).memory	9600
-performance_schema	(pfs_file_class).row_size	320
-performance_schema	(pfs_file_class).row_count	50
-performance_schema	(pfs_file_class).memory	16000
-performance_schema	mutex_instances.row_size	128
-performance_schema	mutex_instances.row_count	2945
-performance_schema	mutex_instances.memory	376960
-performance_schema	rwlock_instances.row_size	192
-performance_schema	rwlock_instances.row_count	1612
-performance_schema	rwlock_instances.memory	309504
-performance_schema	cond_instances.row_size	128
-performance_schema	cond_instances.row_count	612
-performance_schema	cond_instances.memory	78336
-performance_schema	threads.row_size	2816
-performance_schema	threads.row_count	112
-performance_schema	threads.memory	315392
-performance_schema	file_instances.row_size	704
-performance_schema	file_instances.row_count	1556
-performance_schema	file_instances.memory	1095424
-performance_schema	(pfs_file_handle).row_size	8
-performance_schema	(pfs_file_handle).row_count	32768
-performance_schema	(pfs_file_handle).memory	262144
-performance_schema	events_waits_summary_by_thread_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_thread_by_event_name.row_count	42896
-performance_schema	events_waits_summary_by_thread_by_event_name.memory	1372672
-performance_schema	(pfs_table_share).row_size	22208
-performance_schema	(pfs_table_share).row_count	445
-performance_schema	(pfs_table_share).memory	9882560
-performance_schema	(pfs_table).row_size	9280
-performance_schema	(pfs_table).row_count	112
-performance_schema	(pfs_table).memory	1039360
-performance_schema	setup_actors.row_size	256
-performance_schema	setup_actors.row_count	100
-performance_schema	setup_actors.memory	25600
-performance_schema	setup_objects.row_size	448
-performance_schema	setup_objects.row_count	100
-performance_schema	setup_objects.memory	44800
-performance_schema	(pfs_account).row_size	256
-performance_schema	(pfs_account).row_count	10
-performance_schema	(pfs_account).memory	2560
-performance_schema	events_waits_summary_by_account_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_account_by_event_name.row_count	3830
-performance_schema	events_waits_summary_by_account_by_event_name.memory	122560
-performance_schema	events_waits_summary_by_user_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_user_by_event_name.row_count	1915
-performance_schema	events_waits_summary_by_user_by_event_name.memory	61280
-performance_schema	events_waits_summary_by_host_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_host_by_event_name.row_count	7660
-performance_schema	events_waits_summary_by_host_by_event_name.memory	245120
-performance_schema	(pfs_user).row_size	128
-performance_schema	(pfs_user).row_count	5
-performance_schema	(pfs_user).memory	640
-performance_schema	(pfs_host).row_size	128
-performance_schema	(pfs_host).row_count	20
-performance_schema	(pfs_host).memory	2560
-performance_schema	(pfs_stage_class).row_size	256
-performance_schema	(pfs_stage_class).row_count	150
-performance_schema	(pfs_stage_class).memory	38400
-performance_schema	events_stages_history.row_size	88
-performance_schema	events_stages_history.row_count	560
-performance_schema	events_stages_history.memory	49280
-performance_schema	events_stages_history_long.row_size	88
-performance_schema	events_stages_history_long.row_count	100
-performance_schema	events_stages_history_long.memory	8800
-performance_schema	events_stages_summary_by_thread_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_thread_by_event_name.row_count	16800
-performance_schema	events_stages_summary_by_thread_by_event_name.memory	537600
-performance_schema	events_stages_summary_global_by_event_name.row_size	32
-performance_schema	events_stages_summary_global_by_event_name.row_count	150
-performance_schema	events_stages_summary_global_by_event_name.memory	4800
-performance_schema	events_stages_summary_by_account_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_account_by_event_name.row_count	1500
-performance_schema	events_stages_summary_by_account_by_event_name.memory	48000
-performance_schema	events_stages_summary_by_user_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_user_by_event_name.row_count	750
-performance_schema	events_stages_summary_by_user_by_event_name.memory	24000
-performance_schema	events_stages_summary_by_host_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_host_by_event_name.row_count	3000
-performance_schema	events_stages_summary_by_host_by_event_name.memory	96000
-performance_schema	(pfs_statement_class).row_size	192
-performance_schema	(pfs_statement_class).row_count	168
-performance_schema	(pfs_statement_class).memory	32256
-performance_schema	events_statements_history.row_size	3024
-performance_schema	events_statements_history.row_count	560
-performance_schema	events_statements_history.memory	1693440
-performance_schema	events_statements_history_long.row_size	3024
-performance_schema	events_statements_history_long.row_count	100
-performance_schema	events_statements_history_long.memory	302400
-performance_schema	events_statements_summary_by_thread_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_thread_by_event_name.row_count	18816
-performance_schema	events_statements_summary_by_thread_by_event_name.memory	3462144
-performance_schema	events_statements_summary_global_by_event_name.row_size	184
-performance_schema	events_statements_summary_global_by_event_name.row_count	168
-performance_schema	events_statements_summary_global_by_event_name.memory	30912
-performance_schema	events_statements_summary_by_account_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_account_by_event_name.row_count	1680
-performance_schema	events_statements_summary_by_account_by_event_name.memory	309120
-performance_schema	events_statements_summary_by_user_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_user_by_event_name.row_count	840
-performance_schema	events_statements_summary_by_user_by_event_name.memory	154560
-performance_schema	events_statements_summary_by_host_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_host_by_event_name.row_count	3360
-performance_schema	events_statements_summary_by_host_by_event_name.memory	618240
-performance_schema	events_statements_current.row_size	3024
-performance_schema	events_statements_current.row_count	112
-performance_schema	events_statements_current.memory	338688
-performance_schema	(pfs_socket_class).row_size	320
-performance_schema	(pfs_socket_class).row_count	10
-performance_schema	(pfs_socket_class).memory	3200
-performance_schema	socket_instances.row_size	320
-performance_schema	socket_instances.row_count	67
-performance_schema	socket_instances.memory	21440
-performance_schema	events_statements_summary_by_digest.row_size	1472
-performance_schema	events_statements_summary_by_digest.row_count	1000
-performance_schema	events_statements_summary_by_digest.memory	1472000
-performance_schema	session_connect_attrs.row_size	112
-performance_schema	session_connect_attrs.row_count	512
-performance_schema	session_connect_attrs.memory	57344
-performance_schema	(account_hash).count	2
-performance_schema	(account_hash).size	10
-performance_schema	(digest_hash).count	0
-performance_schema	(digest_hash).size	1000
-performance_schema	(filename_hash).count	0
-performance_schema	(filename_hash).size	1556
-performance_schema	(host_hash).count	2
-performance_schema	(host_hash).size	20
-performance_schema	(setup_actor_hash).count	1
-performance_schema	(setup_actor_hash).size	100
-performance_schema	(setup_object_hash).count	4
-performance_schema	(setup_object_hash).size	100
-performance_schema	(table_share_hash).count	80
-performance_schema	(table_share_hash).size	445
-performance_schema	(user_hash).count	2
-performance_schema	(user_hash).size	5
-performance_schema	host_cache.size	336
-performance_schema	performance_schema.memory	24771616
diff --git a/mysql-test/suite/perfschema/r/sizing_med.result b/mysql-test/suite/perfschema/r/sizing_med.result
index c2e7a4df4bf..fbe703c5ff5 100644
--- a/mysql-test/suite/perfschema/r/sizing_med.result
+++ b/mysql-test/suite/perfschema/r/sizing_med.result
@@ -7,7 +7,9 @@ table_open_cache	401
 show variables like "max_connections";
 Variable_name	Value
 max_connections	152
-show variables like "%performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -31,7 +33,6 @@ performance_schema_max_rwlock_instances	2222
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	232
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	168
 performance_schema_max_table_handles	573
 performance_schema_max_table_instances	556
 performance_schema_max_thread_classes	50
@@ -65,160 +66,3 @@ Performance_schema_table_instances_lost	0
 Performance_schema_thread_classes_lost	0
 Performance_schema_thread_instances_lost	0
 Performance_schema_users_lost	0
-show engine performance_schema status;
-Type	Name	Status
-performance_schema	events_waits_current.row_size	184
-performance_schema	events_waits_current.row_count	1734
-performance_schema	events_waits_history.row_size	184
-performance_schema	events_waits_history.row_count	2890
-performance_schema	events_waits_history.memory	531760
-performance_schema	events_waits_history_long.row_size	184
-performance_schema	events_waits_history_long.row_count	1000
-performance_schema	events_waits_history_long.memory	184000
-performance_schema	(pfs_mutex_class).row_size	256
-performance_schema	(pfs_mutex_class).row_count	200
-performance_schema	(pfs_mutex_class).memory	51200
-performance_schema	(pfs_rwlock_class).row_size	320
-performance_schema	(pfs_rwlock_class).row_count	40
-performance_schema	(pfs_rwlock_class).memory	12800
-performance_schema	(pfs_cond_class).row_size	256
-performance_schema	(pfs_cond_class).row_count	80
-performance_schema	(pfs_cond_class).memory	20480
-performance_schema	(pfs_thread_class).row_size	192
-performance_schema	(pfs_thread_class).row_count	50
-performance_schema	(pfs_thread_class).memory	9600
-performance_schema	(pfs_file_class).row_size	320
-performance_schema	(pfs_file_class).row_count	50
-performance_schema	(pfs_file_class).memory	16000
-performance_schema	mutex_instances.row_size	128
-performance_schema	mutex_instances.row_count	4230
-performance_schema	mutex_instances.memory	541440
-performance_schema	rwlock_instances.row_size	192
-performance_schema	rwlock_instances.row_count	2222
-performance_schema	rwlock_instances.memory	426624
-performance_schema	cond_instances.row_size	128
-performance_schema	cond_instances.row_count	1079
-performance_schema	cond_instances.memory	138112
-performance_schema	threads.row_size	2816
-performance_schema	threads.row_count	289
-performance_schema	threads.memory	813824
-performance_schema	file_instances.row_size	704
-performance_schema	file_instances.row_count	1754
-performance_schema	file_instances.memory	1234816
-performance_schema	(pfs_file_handle).row_size	8
-performance_schema	(pfs_file_handle).row_count	32768
-performance_schema	(pfs_file_handle).memory	262144
-performance_schema	events_waits_summary_by_thread_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_thread_by_event_name.row_count	110687
-performance_schema	events_waits_summary_by_thread_by_event_name.memory	3541984
-performance_schema	(pfs_table_share).row_size	22208
-performance_schema	(pfs_table_share).row_count	556
-performance_schema	(pfs_table_share).memory	12347648
-performance_schema	(pfs_table).row_size	9280
-performance_schema	(pfs_table).row_count	573
-performance_schema	(pfs_table).memory	5317440
-performance_schema	setup_actors.row_size	256
-performance_schema	setup_actors.row_count	100
-performance_schema	setup_actors.memory	25600
-performance_schema	setup_objects.row_size	448
-performance_schema	setup_objects.row_count	100
-performance_schema	setup_objects.memory	44800
-performance_schema	(pfs_account).row_size	256
-performance_schema	(pfs_account).row_count	100
-performance_schema	(pfs_account).memory	25600
-performance_schema	events_waits_summary_by_account_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_account_by_event_name.row_count	38300
-performance_schema	events_waits_summary_by_account_by_event_name.memory	1225600
-performance_schema	events_waits_summary_by_user_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_user_by_event_name.row_count	38300
-performance_schema	events_waits_summary_by_user_by_event_name.memory	1225600
-performance_schema	events_waits_summary_by_host_by_event_name.row_size	32
-performance_schema	events_waits_summary_by_host_by_event_name.row_count	38300
-performance_schema	events_waits_summary_by_host_by_event_name.memory	1225600
-performance_schema	(pfs_user).row_size	128
-performance_schema	(pfs_user).row_count	100
-performance_schema	(pfs_user).memory	12800
-performance_schema	(pfs_host).row_size	128
-performance_schema	(pfs_host).row_count	100
-performance_schema	(pfs_host).memory	12800
-performance_schema	(pfs_stage_class).row_size	256
-performance_schema	(pfs_stage_class).row_count	150
-performance_schema	(pfs_stage_class).memory	38400
-performance_schema	events_stages_history.row_size	88
-performance_schema	events_stages_history.row_count	2890
-performance_schema	events_stages_history.memory	254320
-performance_schema	events_stages_history_long.row_size	88
-performance_schema	events_stages_history_long.row_count	1000
-performance_schema	events_stages_history_long.memory	88000
-performance_schema	events_stages_summary_by_thread_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_thread_by_event_name.row_count	43350
-performance_schema	events_stages_summary_by_thread_by_event_name.memory	1387200
-performance_schema	events_stages_summary_global_by_event_name.row_size	32
-performance_schema	events_stages_summary_global_by_event_name.row_count	150
-performance_schema	events_stages_summary_global_by_event_name.memory	4800
-performance_schema	events_stages_summary_by_account_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_account_by_event_name.row_count	15000
-performance_schema	events_stages_summary_by_account_by_event_name.memory	480000
-performance_schema	events_stages_summary_by_user_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_user_by_event_name.row_count	15000
-performance_schema	events_stages_summary_by_user_by_event_name.memory	480000
-performance_schema	events_stages_summary_by_host_by_event_name.row_size	32
-performance_schema	events_stages_summary_by_host_by_event_name.row_count	15000
-performance_schema	events_stages_summary_by_host_by_event_name.memory	480000
-performance_schema	(pfs_statement_class).row_size	192
-performance_schema	(pfs_statement_class).row_count	168
-performance_schema	(pfs_statement_class).memory	32256
-performance_schema	events_statements_history.row_size	3024
-performance_schema	events_statements_history.row_count	2890
-performance_schema	events_statements_history.memory	8739360
-performance_schema	events_statements_history_long.row_size	3024
-performance_schema	events_statements_history_long.row_count	1000
-performance_schema	events_statements_history_long.memory	3024000
-performance_schema	events_statements_summary_by_thread_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_thread_by_event_name.row_count	48552
-performance_schema	events_statements_summary_by_thread_by_event_name.memory	8933568
-performance_schema	events_statements_summary_global_by_event_name.row_size	184
-performance_schema	events_statements_summary_global_by_event_name.row_count	168
-performance_schema	events_statements_summary_global_by_event_name.memory	30912
-performance_schema	events_statements_summary_by_account_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_account_by_event_name.row_count	16800
-performance_schema	events_statements_summary_by_account_by_event_name.memory	3091200
-performance_schema	events_statements_summary_by_user_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_user_by_event_name.row_count	16800
-performance_schema	events_statements_summary_by_user_by_event_name.memory	3091200
-performance_schema	events_statements_summary_by_host_by_event_name.row_size	184
-performance_schema	events_statements_summary_by_host_by_event_name.row_count	16800
-performance_schema	events_statements_summary_by_host_by_event_name.memory	3091200
-performance_schema	events_statements_current.row_size	3024
-performance_schema	events_statements_current.row_count	289
-performance_schema	events_statements_current.memory	873936
-performance_schema	(pfs_socket_class).row_size	320
-performance_schema	(pfs_socket_class).row_count	10
-performance_schema	(pfs_socket_class).memory	3200
-performance_schema	socket_instances.row_size	320
-performance_schema	socket_instances.row_count	232
-performance_schema	socket_instances.memory	74240
-performance_schema	events_statements_summary_by_digest.row_size	1472
-performance_schema	events_statements_summary_by_digest.row_count	5000
-performance_schema	events_statements_summary_by_digest.memory	7360000
-performance_schema	session_connect_attrs.row_size	289
-performance_schema	session_connect_attrs.row_count	512
-performance_schema	session_connect_attrs.memory	147968
-performance_schema	(account_hash).count	2
-performance_schema	(account_hash).size	100
-performance_schema	(digest_hash).count	0
-performance_schema	(digest_hash).size	5000
-performance_schema	(filename_hash).count	0
-performance_schema	(filename_hash).size	1754
-performance_schema	(host_hash).count	2
-performance_schema	(host_hash).size	100
-performance_schema	(setup_actor_hash).count	1
-performance_schema	(setup_actor_hash).size	100
-performance_schema	(setup_object_hash).count	4
-performance_schema	(setup_object_hash).size	100
-performance_schema	(table_share_hash).count	80
-performance_schema	(table_share_hash).size	556
-performance_schema	(user_hash).count	2
-performance_schema	(user_hash).size	100
-performance_schema	host_cache.size	336
-performance_schema	performance_schema.memory	70954032
diff --git a/mysql-test/suite/perfschema/r/sizing_off.result b/mysql-test/suite/perfschema/r/sizing_off.result
index 0d95a8c0f1b..614ad7d2475 100644
--- a/mysql-test/suite/perfschema/r/sizing_off.result
+++ b/mysql-test/suite/perfschema/r/sizing_off.result
@@ -1,4 +1,6 @@
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	OFF
 performance_schema_accounts_size	-1
@@ -22,7 +24,6 @@ performance_schema_max_rwlock_instances	-1
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	-1
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	168
 performance_schema_max_table_handles	-1
 performance_schema_max_table_instances	-1
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_disable_idle.result b/mysql-test/suite/perfschema/r/start_server_disable_idle.result
index b27ecd52226..9e0b9209b89 100644
--- a/mysql-test/suite/perfschema/r/start_server_disable_idle.result
+++ b/mysql-test/suite/perfschema/r/start_server_disable_idle.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_disable_stages.result b/mysql-test/suite/perfschema/r/start_server_disable_stages.result
index 0b8e00a5653..99b18e851a4 100644
--- a/mysql-test/suite/perfschema/r/start_server_disable_stages.result
+++ b/mysql-test/suite/perfschema/r/start_server_disable_stages.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_disable_statements.result b/mysql-test/suite/perfschema/r/start_server_disable_statements.result
index 8e8d1498b9f..5217f16a32f 100644
--- a/mysql-test/suite/perfschema/r/start_server_disable_statements.result
+++ b/mysql-test/suite/perfschema/r/start_server_disable_statements.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_disable_waits.result b/mysql-test/suite/perfschema/r/start_server_disable_waits.result
index d4b02dedc2c..86c25348cd5 100644
--- a/mysql-test/suite/perfschema/r/start_server_disable_waits.result
+++ b/mysql-test/suite/perfschema/r/start_server_disable_waits.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_innodb.result b/mysql-test/suite/perfschema/r/start_server_innodb.result
index 0d7ea7d6294..d03c20a5878 100644
--- a/mysql-test/suite/perfschema/r/start_server_innodb.result
+++ b/mysql-test/suite/perfschema/r/start_server_innodb.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_low_digest.result b/mysql-test/suite/perfschema/r/start_server_low_digest.result
new file mode 100644
index 00000000000..aff444250e0
--- /dev/null
+++ b/mysql-test/suite/perfschema/r/start_server_low_digest.result
@@ -0,0 +1,12 @@
+USE performance_schema;
+truncate table events_statements_history_long;
+SELECT 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1;
+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1
+74
+####################################
+# QUERYING PS STATEMENT DIGEST
+####################################
+SELECT event_name, digest, digest_text, sql_text FROM events_statements_history_long;
+event_name	digest	digest_text	sql_text
+statement/sql/truncate	e1c917a43f978456fab15240f89372ca	TRUNCATE TABLE 	truncate table events_statements_history_long
+statement/sql/select	4cc1c447d79877c4e8df0423fd0cde9a	SELECT ? + ? + 	SELECT 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1
diff --git a/mysql-test/suite/perfschema/r/start_server_no_account.result b/mysql-test/suite/perfschema/r/start_server_no_account.result
index b9ec719ed58..3e0324868a7 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_account.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_account.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	0
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_cond_class.result b/mysql-test/suite/perfschema/r/start_server_no_cond_class.result
index 4fac77bc0cc..158dfb81ebe 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_cond_class.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_cond_class.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_cond_inst.result b/mysql-test/suite/perfschema/r/start_server_no_cond_inst.result
index 75cd54776eb..3673600a078 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_cond_inst.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_cond_inst.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_file_class.result b/mysql-test/suite/perfschema/r/start_server_no_file_class.result
index 9922fcaa016..1e819d26265 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_file_class.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_file_class.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_file_inst.result b/mysql-test/suite/perfschema/r/start_server_no_file_inst.result
index 6e8735f6a1f..b439af66f8d 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_file_inst.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_file_inst.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_host.result b/mysql-test/suite/perfschema/r/start_server_no_host.result
index f5dae7c61d9..abb8a157ec6 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_host.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_host.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_mutex_class.result b/mysql-test/suite/perfschema/r/start_server_no_mutex_class.result
index 4b3c8790b58..c5fe555b749 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_mutex_class.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_mutex_class.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_mutex_inst.result b/mysql-test/suite/perfschema/r/start_server_no_mutex_inst.result
index 92ec4cf61fc..d88d808a9ab 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_mutex_inst.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_mutex_inst.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_rwlock_class.result b/mysql-test/suite/perfschema/r/start_server_no_rwlock_class.result
index e4ac0d0fa8b..1155993e60c 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_rwlock_class.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_rwlock_class.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_rwlock_inst.result b/mysql-test/suite/perfschema/r/start_server_no_rwlock_inst.result
index 3bba543f3b8..4d419817b0a 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_rwlock_inst.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_rwlock_inst.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	0
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_setup_actors.result b/mysql-test/suite/perfschema/r/start_server_no_setup_actors.result
index 2c3ef382fb9..281ca17491c 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_setup_actors.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_setup_actors.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_setup_objects.result b/mysql-test/suite/perfschema/r/start_server_no_setup_objects.result
index 0b49b4d055a..1e5578daddc 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_setup_objects.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_setup_objects.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_socket_class.result b/mysql-test/suite/perfschema/r/start_server_no_socket_class.result
index 9cf73c2b78d..ef1050d9fde 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_socket_class.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_socket_class.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	0
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_socket_inst.result b/mysql-test/suite/perfschema/r/start_server_no_socket_inst.result
index 6da66d6ee75..97cbc807f3c 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_socket_inst.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_socket_inst.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	0
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_stage_class.result b/mysql-test/suite/perfschema/r/start_server_no_stage_class.result
index 532935bb0ff..a173447632d 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_stage_class.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_stage_class.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	0
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_stages_history.result b/mysql-test/suite/perfschema/r/start_server_no_stages_history.result
index 360571bc326..6de6cc3187e 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_stages_history.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_stages_history.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_stages_history_long.result b/mysql-test/suite/perfschema/r/start_server_no_stages_history_long.result
index d458e3da9b1..fc0e680ebb7 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_stages_history_long.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_stages_history_long.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_statement_class.result b/mysql-test/suite/perfschema/r/start_server_no_statement_class.result
index 78fe9223ef4..fca5ab82238 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_statement_class.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_statement_class.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	0
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_statements_history.result b/mysql-test/suite/perfschema/r/start_server_no_statements_history.result
index 2682ea22f88..1fc13bf6ce3 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_statements_history.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_statements_history.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_statements_history_long.result b/mysql-test/suite/perfschema/r/start_server_no_statements_history_long.result
index 9568e9ad56b..d51d3acf343 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_statements_history_long.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_statements_history_long.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_table_hdl.result b/mysql-test/suite/perfschema/r/start_server_no_table_hdl.result
index c189d9a5024..784ed74e33c 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_table_hdl.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_table_hdl.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	0
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_table_inst.result b/mysql-test/suite/perfschema/r/start_server_no_table_inst.result
index a440cfe3302..da73df5c419 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_table_inst.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_table_inst.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	0
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_thread_class.result b/mysql-test/suite/perfschema/r/start_server_no_thread_class.result
index d9c945ea8cb..a84f0f3c0ef 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_thread_class.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_thread_class.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	0
diff --git a/mysql-test/suite/perfschema/r/start_server_no_thread_inst.result b/mysql-test/suite/perfschema/r/start_server_no_thread_inst.result
index f5ce5bebb51..3be29053b33 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_thread_inst.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_thread_inst.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_user.result b/mysql-test/suite/perfschema/r/start_server_no_user.result
index 53cb0051f97..d80a9a4a2c4 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_user.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_user.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_waits_history.result b/mysql-test/suite/perfschema/r/start_server_no_waits_history.result
index 125274550eb..928307123d8 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_waits_history.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_waits_history.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_no_waits_history_long.result b/mysql-test/suite/perfschema/r/start_server_no_waits_history_long.result
index 50212863574..d8ada5f9da5 100644
--- a/mysql-test/suite/perfschema/r/start_server_no_waits_history_long.result
+++ b/mysql-test/suite/perfschema/r/start_server_no_waits_history_long.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_nothing.result b/mysql-test/suite/perfschema/r/start_server_nothing.result
index 4e6994d670e..bf84848641c 100644
--- a/mysql-test/suite/perfschema/r/start_server_nothing.result
+++ b/mysql-test/suite/perfschema/r/start_server_nothing.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	0
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	0
 performance_schema_max_socket_classes	0
 performance_schema_max_socket_instances	0
 performance_schema_max_stage_classes	0
-performance_schema_max_statement_classes	0
 performance_schema_max_table_handles	0
 performance_schema_max_table_instances	0
 performance_schema_max_thread_classes	0
diff --git a/mysql-test/suite/perfschema/r/start_server_off.result b/mysql-test/suite/perfschema/r/start_server_off.result
index 08847829579..293607c41e9 100644
--- a/mysql-test/suite/perfschema/r/start_server_off.result
+++ b/mysql-test/suite/perfschema/r/start_server_off.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	OFF
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/start_server_on.result b/mysql-test/suite/perfschema/r/start_server_on.result
index 0d7ea7d6294..d03c20a5878 100644
--- a/mysql-test/suite/perfschema/r/start_server_on.result
+++ b/mysql-test/suite/perfschema/r/start_server_on.result
@@ -69,7 +69,9 @@ select * from performance_schema.table_io_waits_summary_by_table;
 select * from performance_schema.table_lock_waits_summary_by_table;
 select * from performance_schema.threads;
 select * from performance_schema.users;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -93,7 +95,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/statement_digest.result b/mysql-test/suite/perfschema/r/statement_digest.result
index 4669a6c25a1..e3df74a70d9 100644
--- a/mysql-test/suite/perfschema/r/statement_digest.result
+++ b/mysql-test/suite/perfschema/r/statement_digest.result
@@ -118,7 +118,7 @@ statements_digest	d60830f376a7724280dfc422224bb475	SELECT ? FROM `t1` 	1	0	0	0
 statements_digest	09309c60c199a727b7ebed40975e8764	SELECT ?, ... FROM t1 	2	0	0	0
 statements_digest	dc0dcaefa9a12455ffed04ac6f89e65d	SELECT ? FROM t2 	1	0	0	0
 statements_digest	d274a288509eae2cd7febf2f7fe36274	SELECT ?, ... FROM t2 	2	0	0	0
-statements_digest	ec913f89e0d8be99014bf78e73228c48	INSERT INTO t1 VALUES (?) 	1	1	0	0
+statements_digest	ec913f89e0d8be99014bf78e73228c48	INSERT INTO t1 VALUES (?) 	2	2	0	0
 statements_digest	b919ecf2d5544bcdf95e76eb22231c42	INSERT INTO t2 VALUES (?) 	1	1	0	0
 statements_digest	d9030eddb8dca8ee5fcaf79e6f254b41	INSERT INTO t3 VALUES (...) 	4	4	0	0
 statements_digest	2ad6d8279781b0fb40bdc8647dc94216	INSERT INTO t4 VALUES (...) 	1	1	0	0
@@ -126,7 +126,6 @@ statements_digest	3248c16dc70111225fcffa99641e312b	INSERT INTO t5 VALUES (...)
 statements_digest	152b6c84a0cbfadcbecde01050eddd66	INSERT INTO t1 VALUES (?) /* , ... */ 	2	7	0	0
 statements_digest	c4cbce33b636e448c29e041b1d5c0eb1	INSERT INTO t3 VALUES (...) /* , ... */ 	1	3	0	0
 statements_digest	0bfac9fb577995b116e52ff4aaeaa5b8	INSERT INTO t5 VALUES (...) /* , ... */ 	1	3	0	0
-statements_digest	f8d6ea06dfb87f5c40fd427f3f0ff4e7	INSERT INTO t1 VALUES ( NULL ) 	1	1	0	0
 statements_digest	819acce11785e12f2f73964115632db6	INSERT INTO t6 VALUES (...) 	5	5	0	0
 statements_digest	aeb185ab9b6e9d5a49e47c8741b8acdf	SELECT ? + ? 	3	0	0	0
 statements_digest	d3804664eeee11407f3fcbd5c29a1f73	SELECT ? 	1	0	0	0
@@ -146,7 +145,7 @@ statements_digest	2bd1e1e6eb445f32e1d4b290c1961e6b	DROP PROCEDURE p1 	1	0	0	0
 statements_digest	5799522044ce9a4fa48dce5f4a3b047a	CREATE FUNCTION `func` ( a INTEGER , b INTEGER ) RETURNS INTEGER (?) RETURN a + b 	1	0	0	0
 statements_digest	59cbdd7ffc78a23bc2f650f8158067c6	SELECT func (...) 	2	0	0	0
 statements_digest	0b5a5297689c5036def6af8e8a8ce113	DROP FUNCTION func 	1	0	0	0
-statements_digest	10c7a2262748aa15496375d99f876fb2	CREATE TRIGGER trg BEFORE INSERT ON t12 FOR EACH ROW SET @ ? := ? 	1	0	0	0
+statements_digest	10c7a2262748aa15496375d99f876fb2	CREATE TRIGGER trg BEFORE INSERT ON t12 FOR EACH ROW SET @? := ? 	1	0	0	0
 statements_digest	bb0154f3d32233f696b95d4127d29a3b	INSERT INTO t12 VALUES (?) 	2	2	0	0
 statements_digest	a975545baf024e8a173be77032d8fd01	DROP TRIGGER trg 	1	0	0	0
 ####################################
diff --git a/mysql-test/suite/perfschema/r/statement_digest_consumers.result b/mysql-test/suite/perfschema/r/statement_digest_consumers.result
index b47c8127897..355905f71d8 100644
--- a/mysql-test/suite/perfschema/r/statement_digest_consumers.result
+++ b/mysql-test/suite/perfschema/r/statement_digest_consumers.result
@@ -131,7 +131,7 @@ statements_digest	d60830f376a7724280dfc422224bb475	SELECT ? FROM `t1` 	1
 statements_digest	09309c60c199a727b7ebed40975e8764	SELECT ?, ... FROM t1 	2
 statements_digest	dc0dcaefa9a12455ffed04ac6f89e65d	SELECT ? FROM t2 	1
 statements_digest	d274a288509eae2cd7febf2f7fe36274	SELECT ?, ... FROM t2 	2
-statements_digest	ec913f89e0d8be99014bf78e73228c48	INSERT INTO t1 VALUES (?) 	1
+statements_digest	ec913f89e0d8be99014bf78e73228c48	INSERT INTO t1 VALUES (?) 	2
 statements_digest	b919ecf2d5544bcdf95e76eb22231c42	INSERT INTO t2 VALUES (?) 	1
 statements_digest	d9030eddb8dca8ee5fcaf79e6f254b41	INSERT INTO t3 VALUES (...) 	4
 statements_digest	2ad6d8279781b0fb40bdc8647dc94216	INSERT INTO t4 VALUES (...) 	1
@@ -139,7 +139,6 @@ statements_digest	3248c16dc70111225fcffa99641e312b	INSERT INTO t5 VALUES (...)
 statements_digest	152b6c84a0cbfadcbecde01050eddd66	INSERT INTO t1 VALUES (?) /* , ... */ 	2
 statements_digest	c4cbce33b636e448c29e041b1d5c0eb1	INSERT INTO t3 VALUES (...) /* , ... */ 	1
 statements_digest	0bfac9fb577995b116e52ff4aaeaa5b8	INSERT INTO t5 VALUES (...) /* , ... */ 	1
-statements_digest	f8d6ea06dfb87f5c40fd427f3f0ff4e7	INSERT INTO t1 VALUES ( NULL ) 	1
 statements_digest	819acce11785e12f2f73964115632db6	INSERT INTO t6 VALUES (...) 	5
 statements_digest	aeb185ab9b6e9d5a49e47c8741b8acdf	SELECT ? + ? 	3
 statements_digest	d3804664eeee11407f3fcbd5c29a1f73	SELECT ? 	1
@@ -159,7 +158,7 @@ statements_digest	2bd1e1e6eb445f32e1d4b290c1961e6b	DROP PROCEDURE p1 	1
 statements_digest	5799522044ce9a4fa48dce5f4a3b047a	CREATE FUNCTION `func` ( a INTEGER , b INTEGER ) RETURNS INTEGER (?) RETURN a + b 	1
 statements_digest	59cbdd7ffc78a23bc2f650f8158067c6	SELECT func (...) 	2
 statements_digest	0b5a5297689c5036def6af8e8a8ce113	DROP FUNCTION func 	1
-statements_digest	10c7a2262748aa15496375d99f876fb2	CREATE TRIGGER trg BEFORE INSERT ON t12 FOR EACH ROW SET @ ? := ? 	1
+statements_digest	10c7a2262748aa15496375d99f876fb2	CREATE TRIGGER trg BEFORE INSERT ON t12 FOR EACH ROW SET @? := ? 	1
 statements_digest	bb0154f3d32233f696b95d4127d29a3b	INSERT INTO t12 VALUES (?) 	2
 statements_digest	a975545baf024e8a173be77032d8fd01	DROP TRIGGER trg 	1
 SELECT digest, digest_text FROM performance_schema.events_statements_current;
diff --git a/mysql-test/suite/perfschema/r/statement_digest_long_query.result b/mysql-test/suite/perfschema/r/statement_digest_long_query.result
index 6b00e13576f..f9943060c83 100644
--- a/mysql-test/suite/perfschema/r/statement_digest_long_query.result
+++ b/mysql-test/suite/perfschema/r/statement_digest_long_query.result
@@ -9,4 +9,4 @@ SELECT 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1
 SELECT schema_name, digest, digest_text, count_star FROM events_statements_summary_by_digest;
 schema_name	digest	digest_text	count_star
 performance_schema	7536ab4a65b991a0b1a8b9851e8457c3	TRUNCATE TABLE events_statements_summary_by_digest 	1
-performance_schema	63f9aaeed7859671c6a42c75fcd43785	SELECT ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ...	1
+performance_schema	63f9aaeed7859671c6a42c75fcd43785	SELECT ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? + ? 	1
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_global_2u_2t.result b/mysql-test/suite/perfschema/r/table_aggregate_global_2u_2t.result
index ea2980e5755..2613737a3da 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_global_2u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_global_2u_2t.result
@@ -39,7 +39,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -63,7 +65,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_global_2u_3t.result b/mysql-test/suite/perfschema/r/table_aggregate_global_2u_3t.result
index f51e8383019..e5aaf207820 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_global_2u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_global_2u_3t.result
@@ -38,7 +38,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -62,7 +64,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_global_4u_2t.result b/mysql-test/suite/perfschema/r/table_aggregate_global_4u_2t.result
index a7844b6b0e6..637d923ebdb 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_global_4u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_global_4u_2t.result
@@ -39,7 +39,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -63,7 +65,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_global_4u_3t.result b/mysql-test/suite/perfschema/r/table_aggregate_global_4u_3t.result
index 4d089c810a1..a41ae765a77 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_global_4u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_global_4u_3t.result
@@ -38,7 +38,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -62,7 +64,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_hist_2u_2t.result b/mysql-test/suite/perfschema/r/table_aggregate_hist_2u_2t.result
index 23bd1294445..2278744621e 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_hist_2u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_hist_2u_2t.result
@@ -37,7 +37,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -61,7 +63,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_hist_2u_3t.result b/mysql-test/suite/perfschema/r/table_aggregate_hist_2u_3t.result
index 7edfc3824bb..b3ada0d638a 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_hist_2u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_hist_2u_3t.result
@@ -36,7 +36,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -60,7 +62,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_hist_4u_2t.result b/mysql-test/suite/perfschema/r/table_aggregate_hist_4u_2t.result
index 99d2e7d4655..361a8a700d0 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_hist_4u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_hist_4u_2t.result
@@ -37,7 +37,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -61,7 +63,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_hist_4u_3t.result b/mysql-test/suite/perfschema/r/table_aggregate_hist_4u_3t.result
index f8c660bd932..97bb0e34e0d 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_hist_4u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_hist_4u_3t.result
@@ -36,7 +36,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -60,7 +62,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_off.result b/mysql-test/suite/perfschema/r/table_aggregate_off.result
index 73ed3550a77..f28f374c5dd 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_off.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_off.result
@@ -38,7 +38,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -62,7 +64,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_thread_2u_2t.result b/mysql-test/suite/perfschema/r/table_aggregate_thread_2u_2t.result
index 3906c6f6b84..f7760043ddd 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_thread_2u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_thread_2u_2t.result
@@ -39,7 +39,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -63,7 +65,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_thread_2u_3t.result b/mysql-test/suite/perfschema/r/table_aggregate_thread_2u_3t.result
index 0b579f54a66..0ee5eaddcaf 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_thread_2u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_thread_2u_3t.result
@@ -38,7 +38,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -62,7 +64,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_thread_4u_2t.result b/mysql-test/suite/perfschema/r/table_aggregate_thread_4u_2t.result
index e137525e5b0..025a7f27738 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_thread_4u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_thread_4u_2t.result
@@ -39,7 +39,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -63,7 +65,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_aggregate_thread_4u_3t.result b/mysql-test/suite/perfschema/r/table_aggregate_thread_4u_3t.result
index 799555b685e..f655cd5bb93 100644
--- a/mysql-test/suite/perfschema/r/table_aggregate_thread_4u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_aggregate_thread_4u_3t.result
@@ -38,7 +38,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -62,7 +64,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_2t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_2t.result
index bf920a30af3..55bb5a6a71f 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_2t.result
@@ -41,7 +41,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -65,7 +67,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_3t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_3t.result
index d100f2a5e08..7f9f9e99359 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_global_2u_3t.result
@@ -40,7 +40,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -64,7 +66,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_2t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_2t.result
index a5d046f154c..7aa15b6a01d 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_2t.result
@@ -41,7 +41,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -65,7 +67,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_3t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_3t.result
index 413a566fefb..0732fce5853 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_global_4u_3t.result
@@ -40,7 +40,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -64,7 +66,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_2t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_2t.result
index 4a5e7aeede1..c1f6fd56a97 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_2t.result
@@ -39,7 +39,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -63,7 +65,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_3t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_3t.result
index 25ba676993a..705e6ca7021 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_hist_2u_3t.result
@@ -38,7 +38,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -62,7 +64,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_2t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_2t.result
index 41292e5913e..04b7c7979c4 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_2t.result
@@ -39,7 +39,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -63,7 +65,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_3t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_3t.result
index fc7c523ed8c..ef1f31b19a4 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_hist_4u_3t.result
@@ -38,7 +38,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -62,7 +64,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_2t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_2t.result
index 210928a0c04..a7ac4fa860f 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_2t.result
@@ -41,7 +41,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -65,7 +67,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_3t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_3t.result
index 9df65066d45..28bdcfb1d82 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_thread_2u_3t.result
@@ -40,7 +40,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -64,7 +66,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_2t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_2t.result
index a9109fa42d2..683dd9cc4a6 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_2t.result
@@ -41,7 +41,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -65,7 +67,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_3t.result b/mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_3t.result
index 542b020f77a..d488066dd7f 100644
--- a/mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_io_aggregate_thread_4u_3t.result
@@ -40,7 +40,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -64,7 +66,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_2t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_2t.result
index ece0dadebd0..d3a4416fdfd 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_2t.result
@@ -41,7 +41,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -65,7 +67,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_3t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_3t.result
index 956540b9327..c69fc8a37d3 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_global_2u_3t.result
@@ -40,7 +40,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -64,7 +66,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_2t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_2t.result
index 72f0240c6be..91110a94be5 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_2t.result
@@ -41,7 +41,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -65,7 +67,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_3t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_3t.result
index a93cc1b6499..b443ac28c17 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_global_4u_3t.result
@@ -40,7 +40,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -64,7 +66,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_2t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_2t.result
index 0e1b7032af6..08a107acb2a 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_2t.result
@@ -39,7 +39,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -63,7 +65,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_3t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_3t.result
index fb1fd8fb207..07272c6e204 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_2u_3t.result
@@ -38,7 +38,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -62,7 +64,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_2t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_2t.result
index f97272634b9..77c52780ae9 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_2t.result
@@ -39,7 +39,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -63,7 +65,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_3t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_3t.result
index ddf8ef7bf9d..6d7192285e3 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_hist_4u_3t.result
@@ -38,7 +38,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -62,7 +64,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_2t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_2t.result
index 588a378024a..160be444e7c 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_2t.result
@@ -41,7 +41,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -65,7 +67,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_3t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_3t.result
index 76c466d48cc..e915a8dfa95 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_2u_3t.result
@@ -40,7 +40,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -64,7 +66,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_2t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_2t.result
index 2450456355a..82c1b65acff 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_2t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_2t.result
@@ -41,7 +41,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -65,7 +67,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_3t.result b/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_3t.result
index 72b46a2820b..9023a4b0a69 100644
--- a/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_3t.result
+++ b/mysql-test/suite/perfschema/r/table_lock_aggregate_thread_4u_3t.result
@@ -40,7 +40,9 @@ truncate performance_schema.events_waits_summary_by_user_by_event_name;
 truncate performance_schema.events_waits_summary_by_host_by_event_name;
 truncate performance_schema.events_waits_summary_global_by_event_name;
 truncate performance_schema.events_waits_history_long;
-show variables like "performance_schema%";
+show variables where
+`Variable_name` != "performance_schema_max_statement_classes" and
+`Variable_name` like "performance_schema%";
 Variable_name	Value
 performance_schema	ON
 performance_schema_accounts_size	100
@@ -64,7 +66,6 @@ performance_schema_max_rwlock_instances	5000
 performance_schema_max_socket_classes	10
 performance_schema_max_socket_instances	1000
 performance_schema_max_stage_classes	150
-performance_schema_max_statement_classes	180
 performance_schema_max_table_handles	1000
 performance_schema_max_table_instances	500
 performance_schema_max_thread_classes	50
diff --git a/mysql-test/suite/perfschema/t/digest_null_literal.test b/mysql-test/suite/perfschema/t/digest_null_literal.test
new file mode 100644
index 00000000000..a3007ced1e2
--- /dev/null
+++ b/mysql-test/suite/perfschema/t/digest_null_literal.test
@@ -0,0 +1,32 @@
+# ----------------------------------------------------
+# Tests for the performance schema statement Digests.
+# ----------------------------------------------------
+
+# Test case to show behavior of statements digest when
+# parsing a NULL literal
+
+--source include/not_embedded.inc
+--source include/have_perfschema.inc
+--source ../include/no_protocol.inc
+
+TRUNCATE TABLE performance_schema.events_statements_summary_by_digest;
+
+--disable_query_log
+
+select NULL;
+select NULL FROM DUAL;
+select NULL, NULL;
+select NULL, NULL, NULL, 1, 2, 3, NULL, NULL;
+
+select 1 IS NULL;
+select 2 IS NOT NULL;
+select 1 IS NULL, 2 IS NULL, 3 IS NOT NULL, 4 IS NOT NULL;
+
+create table foo (a int DEFAULT NULL, b int NOT NULL DEFAULT 1, c int NOT NULL);
+drop table foo;
+
+--enable_query_log
+
+SELECT SCHEMA_NAME, DIGEST_TEXT, COUNT_STAR
+  FROM performance_schema.events_statements_summary_by_digest;
+
diff --git a/mysql-test/suite/perfschema/t/ortho_iter.test b/mysql-test/suite/perfschema/t/ortho_iter.test
index a9990e17409..0a90831ae70 100644
--- a/mysql-test/suite/perfschema/t/ortho_iter.test
+++ b/mysql-test/suite/perfschema/t/ortho_iter.test
@@ -126,8 +126,9 @@ $
 delimiter ;$
 
 # Check the configuration is ok
-show variables like "performance_schema%";
-show status like "performance_schema%";
+show variables where
+    `Variable_name` != "performance_schema_max_statement_classes" and
+    `Variable_name` like "performance_schema%";
 
 call check_instrument("wait/synch/mutex/");
 call check_instrument("wait/synch/rwlock/");
diff --git a/mysql-test/suite/perfschema/t/privilege_table_io.test b/mysql-test/suite/perfschema/t/privilege_table_io.test
index dc17fbcf67e..833fe85e8bb 100644
--- a/mysql-test/suite/perfschema/t/privilege_table_io.test
+++ b/mysql-test/suite/perfschema/t/privilege_table_io.test
@@ -36,7 +36,9 @@ insert into test.marker set a = 1;
 # This will not, the ACL cache is already loaded
 insert into test.marker set a = 1;
 insert into test.marker set a = 1;
-show variables like "performance_schema%";
+show variables where
+    `Variable_name` != "performance_schema_max_statement_classes" and
+    `Variable_name` like "performance_schema%";
 show status like "performance_schema%";
 # Stop recording events + pull results
 let $schema_to_dump= "test", "mysql";
diff --git a/mysql-test/suite/perfschema/t/sizing_off.test b/mysql-test/suite/perfschema/t/sizing_off.test
index 83b49572cb4..32729918bd1 100644
--- a/mysql-test/suite/perfschema/t/sizing_off.test
+++ b/mysql-test/suite/perfschema/t/sizing_off.test
@@ -2,5 +2,7 @@
 --source include/not_embedded.inc
 --source include/have_perfschema.inc
 
-show variables like "performance_schema%";
+show variables where
+    `Variable_name` != "performance_schema_max_statement_classes" and
+    `Variable_name` like "performance_schema%";
 show status like "performance_schema%";
diff --git a/mysql-test/suite/perfschema/t/start_server_low_digest-master.opt b/mysql-test/suite/perfschema/t/start_server_low_digest-master.opt
new file mode 100644
index 00000000000..fc5065f9ae9
--- /dev/null
+++ b/mysql-test/suite/perfschema/t/start_server_low_digest-master.opt
@@ -0,0 +1 @@
+--max_digest_length=10
diff --git a/mysql-test/suite/perfschema/t/start_server_low_digest.test b/mysql-test/suite/perfschema/t/start_server_low_digest.test
new file mode 100644
index 00000000000..953f4d31656
--- /dev/null
+++ b/mysql-test/suite/perfschema/t/start_server_low_digest.test
@@ -0,0 +1,21 @@
+# -----------------------------------------------------------------------
+# Tests for the performance schema statement Digests.
+# -----------------------------------------------------------------------
+
+--source include/not_embedded.inc
+--source include/have_perfschema.inc
+--source ../include/no_protocol.inc
+
+USE performance_schema;
+truncate table events_statements_history_long;
+
+# -----------------------------------------------------------------------
+# Test to show how the digest behaves with low value of 
+#  - performance_schema_max_digest_length
+# -----------------------------------------------------------------------
+SELECT 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1;
+
+--echo ####################################
+--echo # QUERYING PS STATEMENT DIGEST
+--echo ####################################
+SELECT event_name, digest, digest_text, sql_text FROM events_statements_history_long;
diff --git a/mysql-test/suite/sys_vars/r/all_vars.result b/mysql-test/suite/sys_vars/r/all_vars.result
index 1bd4e394f6a..7f75b731255 100644
--- a/mysql-test/suite/sys_vars/r/all_vars.result
+++ b/mysql-test/suite/sys_vars/r/all_vars.result
@@ -10,5 +10,6 @@ there should be *no* long test name listed below:
 select distinct variable_name as `there should be *no* variables listed below:` from t2
 left join t1 on variable_name=test_name where test_name is null;
 there should be *no* variables listed below:
+max_digest_length
 drop table t1;
 drop table t2;
diff --git a/sql/CMakeLists.txt b/sql/CMakeLists.txt
index fba1a68fa46..88ec26eb6f6 100644
--- a/sql/CMakeLists.txt
+++ b/sql/CMakeLists.txt
@@ -28,8 +28,26 @@ ${CMAKE_CURRENT_BINARY_DIR}/sql_yacc.h
 ${CMAKE_CURRENT_BINARY_DIR}/sql_yacc.cc
 ${CMAKE_CURRENT_BINARY_DIR}/lex_hash.h 
 )
+SET(GEN_DIGEST_SOURCES
+  ${CMAKE_CURRENT_BINARY_DIR}/lex_token.h 
+)
+
+SET_SOURCE_FILES_PROPERTIES(${GEN_SOURCES}
+                            ${GEN_DIGEST_SOURCES}
+                            PROPERTIES GENERATED 1)
+
+# Gen_lex_token
+# Make sure sql_yacc.h is generated before compiling gen_lex_token
+IF(NOT CMAKE_CROSSCOMPILING)
+  ADD_EXECUTABLE(gen_lex_token gen_lex_token.cc)
+  ADD_DEPENDENCIES(gen_lex_token GenServerSource)
+ENDIF()
 
-SET_SOURCE_FILES_PROPERTIES(${GEN_SOURCES} PROPERTIES GENERATED 1)
+ADD_CUSTOM_COMMAND(
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/lex_token.h
+  COMMAND gen_lex_token > lex_token.h
+  DEPENDS gen_lex_token
+)
 
 ADD_DEFINITIONS(-DMYSQL_SERVER -DHAVE_EVENT_SCHEDULER) 
 
@@ -59,7 +77,8 @@ SET (SQL_SOURCE
                slave.cc sp.cc sp_cache.cc sp_head.cc sp_pcontext.cc 
                sp_rcontext.cc spatial.cc sql_acl.cc sql_analyse.cc sql_base.cc 
                sql_cache.cc sql_class.cc sql_client.cc sql_crypt.cc sql_crypt.h 
-               sql_cursor.cc sql_db.cc sql_delete.cc sql_derived.cc sql_do.cc 
+               sql_cursor.cc sql_db.cc sql_delete.cc sql_derived.cc
+               sql_digest.cc sql_do.cc 
                sql_error.cc sql_handler.cc sql_get_diagnostics.cc
                sql_help.cc sql_insert.cc sql_lex.cc 
                sql_list.cc sql_load.cc sql_manager.cc
@@ -96,6 +115,7 @@ SET (SQL_SOURCE
                table_cache.cc
                ${CMAKE_CURRENT_BINARY_DIR}/sql_builtin.cc
                ${GEN_SOURCES}
+               ${GEN_DIGEST_SOURCES}
                ${MYSYS_LIBWRAP_SOURCE}
 			   )
   
@@ -116,6 +136,7 @@ RECOMPILE_FOR_EMBEDDED)
 
 ADD_LIBRARY(sql STATIC ${SQL_SOURCE})
 ADD_DEPENDENCIES(sql GenServerSource)
+ADD_DEPENDENCIES(sql GenDigestServerSource)
 DTRACE_INSTRUMENT(sql)
 TARGET_LINK_LIBRARIES(sql ${MYSQLD_STATIC_PLUGIN_LIBS} 
   mysys mysys_ssl dbug strings vio pcre ${LIBJEMALLOC}
@@ -245,6 +266,11 @@ ADD_CUSTOM_TARGET(
         DEPENDS ${GEN_SOURCES}
 )
 
+ADD_CUSTOM_TARGET( 
+        GenDigestServerSource
+        DEPENDS ${GEN_DIGEST_SOURCES}
+)
+
 #Need this only for embedded
 SET_TARGET_PROPERTIES(GenServerSource PROPERTIES EXCLUDE_FROM_ALL TRUE)
 
diff --git a/sql/event_scheduler.cc b/sql/event_scheduler.cc
index f2b3a77f414..5c4926c830c 100644
--- a/sql/event_scheduler.cc
+++ b/sql/event_scheduler.cc
@@ -301,6 +301,9 @@ Event_worker_thread::run(THD *thd, Event_queue_element_for_exec *event)
   Event_job_data job_data;
   bool res;
 
+  DBUG_ASSERT(thd->m_digest == NULL);
+  DBUG_ASSERT(thd->m_statement_psi == NULL);
+
   thd->thread_stack= &my_stack;                // remember where our stack is
   res= post_init_event_thread(thd);
 
@@ -329,6 +332,8 @@ Event_worker_thread::run(THD *thd, Event_queue_element_for_exec *event)
                           job_data.definer.str,
                           job_data.dbname.str, job_data.name.str);
 end:
+  DBUG_ASSERT(thd->m_statement_psi == NULL);
+  DBUG_ASSERT(thd->m_digest == NULL);
   DBUG_PRINT("info", ("Done with Event %s.%s", event->dbname.str,
              event->name.str));
 
diff --git a/sql/gen_lex_token.cc b/sql/gen_lex_token.cc
new file mode 100644
index 00000000000..3584dd60c62
--- /dev/null
+++ b/sql/gen_lex_token.cc
@@ -0,0 +1,353 @@
+/*
+   Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
+
+#include <my_global.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+/* We only need the tokens here */
+#define YYSTYPE_IS_DECLARED
+#include <sql_yacc.h>
+#include <lex.h>
+
+#include <welcome_copyright_notice.h> /* ORACLE_WELCOME_COPYRIGHT_NOTICE */
+
+/*
+  This is a tool used during build only,
+  so MY_MAX_TOKEN does not need to be exact,
+  only big enough to hold:
+  - 256 character terminal tokens
+  - YYNTOKENS named terminal tokens
+  from bison.
+  See also YYMAXUTOK.
+*/
+#define MY_MAX_TOKEN 1000
+/** Generated token. */
+struct gen_lex_token_string
+{
+  const char *m_token_string;
+  int m_token_length;
+  bool m_append_space;
+  bool m_start_expr;
+};
+
+gen_lex_token_string compiled_token_array[MY_MAX_TOKEN];
+int max_token_seen= 0;
+
+char char_tokens[256];
+
+int tok_generic_value= 0;
+int tok_generic_value_list= 0;
+int tok_row_single_value= 0;
+int tok_row_single_value_list= 0;
+int tok_row_multiple_value= 0;
+int tok_row_multiple_value_list= 0;
+int tok_unused= 0;
+
+void set_token(int tok, const char *str)
+{
+  if (tok <= 0)
+  {
+    fprintf(stderr, "Bad token found\n");
+    exit(1);
+  }
+
+  if (tok > max_token_seen)
+  {
+    max_token_seen= tok;
+  }
+
+  if (max_token_seen >= MY_MAX_TOKEN)
+  {
+    fprintf(stderr, "Added that many new keywords ? Increase MY_MAX_TOKEN\n");
+    exit(1);
+  }
+
+  compiled_token_array[tok].m_token_string= str;
+  compiled_token_array[tok].m_token_length= strlen(str);
+  compiled_token_array[tok].m_append_space= true;
+  compiled_token_array[tok].m_start_expr= false;
+}
+
+void set_start_expr_token(int tok)
+{
+  compiled_token_array[tok].m_start_expr= true;
+}
+
+void compute_tokens()
+{
+  int tok;
+  unsigned int i;
+  char *str;
+
+  /*
+    Default value.
+  */
+  for (tok= 0; tok < MY_MAX_TOKEN; tok++)
+  {
+    compiled_token_array[tok].m_token_string= "(unknown)";
+    compiled_token_array[tok].m_token_length= 9;
+    compiled_token_array[tok].m_append_space= true;
+    compiled_token_array[tok].m_start_expr= false;
+  }
+
+  /*
+    Tokens made of just one terminal character
+  */
+  for (tok=0; tok < 256; tok++)
+  {
+    str= & char_tokens[tok];
+    str[0]= (char) tok;
+    compiled_token_array[tok].m_token_string= str;
+    compiled_token_array[tok].m_token_length= 1;
+    compiled_token_array[tok].m_append_space= true;
+  }
+
+  max_token_seen= 255;
+
+  /*
+    String terminal tokens, used in sql_yacc.yy
+  */
+  set_token(NEG, "~");
+  set_token(TABLE_REF_PRIORITY, "TABLE_REF_PRIORITY");
+
+  /*
+    Tokens hard coded in sql_lex.cc
+  */
+
+  set_token(WITH_CUBE_SYM, "WITH CUBE");
+  set_token(WITH_ROLLUP_SYM, "WITH ROLLUP");
+  set_token(NOT2_SYM, "!");
+  set_token(OR2_SYM, "|");
+  set_token(PARAM_MARKER, "?");
+  set_token(SET_VAR, ":=");
+  set_token(UNDERSCORE_CHARSET, "(_charset)");
+  set_token(END_OF_INPUT, "");
+
+  /*
+    Values.
+    These tokens are all normalized later,
+    so this strings will never be displayed.
+  */
+  set_token(BIN_NUM, "(bin)");
+  set_token(DECIMAL_NUM, "(decimal)");
+  set_token(FLOAT_NUM, "(float)");
+  set_token(HEX_NUM, "(hex)");
+  set_token(LEX_HOSTNAME, "(hostname)");
+  set_token(LONG_NUM, "(long)");
+  set_token(NUM, "(num)");
+  set_token(TEXT_STRING, "(text)");
+  set_token(NCHAR_STRING, "(nchar)");
+  set_token(ULONGLONG_NUM, "(ulonglong)");
+
+  /*
+    Identifiers.
+  */
+  set_token(IDENT, "(id)");
+  set_token(IDENT_QUOTED, "(id_quoted)");
+
+  /*
+    Unused tokens
+  */
+  set_token(LOCATOR_SYM, "LOCATOR");
+  set_token(SERVER_OPTIONS, "SERVER_OPTIONS");
+  set_token(UDF_RETURNS_SYM, "UDF_RETURNS");
+
+  /*
+    See symbols[] in sql/lex.h
+  */
+  for (i= 0; i< sizeof(symbols)/sizeof(symbols[0]); i++)
+  {
+    set_token(symbols[i].tok, symbols[i].name);
+  }
+
+  /*
+    See sql_functions[] in sql/lex.h
+  */
+  for (i= 0; i< sizeof(sql_functions)/sizeof(sql_functions[0]); i++)
+  {
+    set_token(sql_functions[i].tok, sql_functions[i].name);
+  }
+
+  /*
+    Additional FAKE tokens,
+    used internally to normalize a digest text.
+  */
+
+  max_token_seen++;
+  tok_generic_value= max_token_seen;
+  set_token(tok_generic_value, "?");
+
+  max_token_seen++;
+  tok_generic_value_list= max_token_seen;
+  set_token(tok_generic_value_list, "?, ...");
+
+  max_token_seen++;
+  tok_row_single_value= max_token_seen;
+  set_token(tok_row_single_value, "(?)");
+
+  max_token_seen++;
+  tok_row_single_value_list= max_token_seen;
+  set_token(tok_row_single_value_list, "(?) /* , ... */");
+
+  max_token_seen++;
+  tok_row_multiple_value= max_token_seen;
+  set_token(tok_row_multiple_value, "(...)");
+
+  max_token_seen++;
+  tok_row_multiple_value_list= max_token_seen;
+  set_token(tok_row_multiple_value_list, "(...) /* , ... */");
+
+  max_token_seen++;
+  tok_unused= max_token_seen;
+  set_token(tok_unused, "UNUSED");
+
+  /*
+    Fix whitespace for some special tokens.
+  */
+
+  /*
+    The lexer parses "@@variable" as '@', '@', 'variable',
+    returning a token for '@' alone.
+
+    This is incorrect, '@' is not really a token,
+    because the syntax "@ @ variable" (with spaces) is not accepted:
+    The lexer keeps some internal state after the '@' fake token.
+
+    To work around this, digest text are printed as "@@variable".
+  */
+  compiled_token_array[(int) '@'].m_append_space= false;
+
+  /*
+    Define additional properties for tokens.
+
+    List all the token that are followed by an expression.
+    This is needed to differentiate unary from binary
+    '+' and '-' operators, because we want to:
+    - reduce <unary +> <NUM> to <?>,
+    - preserve <...> <binary +> <NUM> as is.
+  */
+  set_start_expr_token('(');
+  set_start_expr_token(',');
+  set_start_expr_token(EVERY_SYM);
+  set_start_expr_token(AT_SYM);
+  set_start_expr_token(STARTS_SYM);
+  set_start_expr_token(ENDS_SYM);
+  set_start_expr_token(DEFAULT);
+  set_start_expr_token(RETURN_SYM);
+  set_start_expr_token(IF);
+  set_start_expr_token(ELSEIF_SYM);
+  set_start_expr_token(CASE_SYM);
+  set_start_expr_token(WHEN_SYM);
+  set_start_expr_token(WHILE_SYM);
+  set_start_expr_token(UNTIL_SYM);
+  set_start_expr_token(SELECT_SYM);
+
+  set_start_expr_token(OR_SYM);
+  set_start_expr_token(OR2_SYM);
+  set_start_expr_token(XOR);
+  set_start_expr_token(AND_SYM);
+  set_start_expr_token(AND_AND_SYM);
+  set_start_expr_token(NOT_SYM);
+  set_start_expr_token(BETWEEN_SYM);
+  set_start_expr_token(LIKE);
+  set_start_expr_token(REGEXP);
+
+  set_start_expr_token('|');
+  set_start_expr_token('&');
+  set_start_expr_token(SHIFT_LEFT);
+  set_start_expr_token(SHIFT_RIGHT);
+  set_start_expr_token('+');
+  set_start_expr_token('-');
+  set_start_expr_token(INTERVAL_SYM);
+  set_start_expr_token('*');
+  set_start_expr_token('/');
+  set_start_expr_token('%');
+  set_start_expr_token(DIV_SYM);
+  set_start_expr_token(MOD_SYM);
+  set_start_expr_token('^');
+}
+
+void print_tokens()
+{
+  int tok;
+
+  printf("#ifdef LEX_TOKEN_WITH_DEFINITION\n");
+  printf("lex_token_string lex_token_array[]=\n");
+  printf("{\n");
+  printf("/* PART 1: character tokens. */\n");
+
+  for (tok= 0; tok<256; tok++)
+  {
+    printf("/* %03d */  { \"\\x%02x\", 1, %s, %s},\n",
+           tok,
+           tok,
+           compiled_token_array[tok].m_append_space ? "true" : "false",
+           compiled_token_array[tok].m_start_expr ? "true" : "false");
+  }
+
+  printf("/* PART 2: named tokens. */\n");
+
+  for (tok= 256; tok<= max_token_seen; tok++)
+  {
+    printf("/* %03d */  { \"%s\", %d, %s, %s},\n",
+           tok,
+           compiled_token_array[tok].m_token_string,
+           compiled_token_array[tok].m_token_length,
+           compiled_token_array[tok].m_append_space ? "true" : "false",
+           compiled_token_array[tok].m_start_expr ? "true" : "false");
+  }
+
+  printf("/* DUMMY */ { \"\", 0, false, false}\n");
+  printf("};\n");
+  printf("#endif /* LEX_TOKEN_WITH_DEFINITION */\n");
+
+  printf("/* DIGEST specific tokens. */\n");
+  printf("#define TOK_GENERIC_VALUE %d\n", tok_generic_value);
+  printf("#define TOK_GENERIC_VALUE_LIST %d\n", tok_generic_value_list);
+  printf("#define TOK_ROW_SINGLE_VALUE %d\n", tok_row_single_value);
+  printf("#define TOK_ROW_SINGLE_VALUE_LIST %d\n", tok_row_single_value_list);
+  printf("#define TOK_ROW_MULTIPLE_VALUE %d\n", tok_row_multiple_value);
+  printf("#define TOK_ROW_MULTIPLE_VALUE_LIST %d\n", tok_row_multiple_value_list);
+  printf("#define TOK_UNUSED %d\n", tok_unused);
+}
+
+int main(int argc,char **argv)
+{
+  puts("/*");
+  puts(ORACLE_WELCOME_COPYRIGHT_NOTICE("2011"));
+  puts("*/");
+
+  printf("/*\n");
+  printf("  This file is generated, do not edit.\n");
+  printf("  See file sql/gen_lex_token.cc.\n");
+  printf("*/\n");
+  printf("struct lex_token_string\n");
+  printf("{\n");
+  printf("  const char *m_token_string;\n");
+  printf("  int m_token_length;\n");
+  printf("  bool m_append_space;\n");
+  printf("  bool m_start_expr;\n");
+  printf("};\n");
+  printf("typedef struct lex_token_string lex_token_string;\n");
+
+  compute_tokens();
+  print_tokens();
+
+  return 0;
+}
+
diff --git a/sql/log_event.cc b/sql/log_event.cc
index 5c5f5cdb9f1..29cb10c0abf 100644
--- a/sql/log_event.cc
+++ b/sql/log_event.cc
@@ -49,6 +49,7 @@
 #include <base64.h>
 #include <my_bitmap.h>
 #include "rpl_utility.h"
+#include "sql_digest.h"
 
 #define my_b_write_string(A, B) my_b_write((A), (B), (uint) (sizeof(B) - 1))
 
@@ -4282,12 +4283,17 @@ int Query_log_event::do_apply_event(rpl_group_info *rgi,
       Parser_state parser_state;
       if (!parser_state.init(thd, thd->query(), thd->query_length()))
       {
+        DBUG_ASSERT(thd->m_digest == NULL);
+        thd->m_digest= & thd->m_digest_state;
+        DBUG_ASSERT(thd->m_statement_psi == NULL);
         thd->m_statement_psi= MYSQL_START_STATEMENT(&thd->m_statement_state,
                                                     stmt_info_rpl.m_key,
                                                     thd->db, thd->db_length,
                                                     thd->charset());
         THD_STAGE_INFO(thd, stage_init);
         MYSQL_SET_STATEMENT_TEXT(thd->m_statement_psi, thd->query(), thd->query_length());
+        if (thd->m_digest != NULL)
+          thd->m_digest->reset(thd->m_token_array, max_digest_length);
 
         mysql_parse(thd, thd->query(), thd->query_length(), &parser_state);
         /* Finalize server status flags after executing a statement. */
@@ -4379,11 +4385,10 @@ compare_errors:
         !ignored_error_code(expected_error))
     {
       rli->report(ERROR_LEVEL, 0, rgi->gtid_info(),
-                      "\
-Query caused different errors on master and slave.     \
-Error on master: message (format)='%s' error code=%d ; \
-Error on slave: actual message='%s', error code=%d. \
-Default database: '%s'. Query: '%s'",
+                      "Query caused different errors on master and slave.     "
+                      "Error on master: message (format)='%s' error code=%d ; "
+                      "Error on slave: actual message='%s', error code=%d. "
+                      "Default database: '%s'. Query: '%s'",
                       ER_SAFE(expected_error),
                       expected_error,
                       actual_error ? thd->get_stmt_da()->message() : "no error",
@@ -4479,6 +4484,7 @@ end:
   /* Mark the statement completed. */
   MYSQL_END_STATEMENT(thd->m_statement_psi, thd->get_stmt_da());
   thd->m_statement_psi= NULL;
+  thd->m_digest= NULL;
 
   /*
     As a disk space optimization, future masters will not log an event for
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index 2eaf8096795..6f28244f6c2 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -515,6 +515,7 @@ ulong binlog_cache_use= 0, binlog_cache_disk_use= 0;
 ulong binlog_stmt_cache_use= 0, binlog_stmt_cache_disk_use= 0;
 ulong max_connections, max_connect_errors;
 ulong extra_max_connections;
+ulong max_digest_length= 0;
 ulong slave_retried_transactions;
 ulong feature_files_opened_with_delayed_keys;
 ulonglong denied_connections;
@@ -5274,6 +5275,8 @@ int mysqld_main(int argc, char **argv)
       pfs_param.m_hints.m_table_open_cache= tc_size;
       pfs_param.m_hints.m_max_connections= max_connections;
       pfs_param.m_hints.m_open_files_limit= open_files_limit;
+      /* the performance schema digest size is the same as the SQL layer */
+      pfs_param.m_max_digest_length= max_digest_length;
       PSI_hook= initialize_performance_schema(&pfs_param);
       if (PSI_hook == NULL)
       {
diff --git a/sql/mysqld.h b/sql/mysqld.h
index f6d9dbea48a..5f47c9d5b4e 100644
--- a/sql/mysqld.h
+++ b/sql/mysqld.h
@@ -167,6 +167,7 @@ extern ulong query_cache_limit;
 extern ulong query_cache_min_res_unit;
 extern ulong slow_launch_threads, slow_launch_time;
 extern MYSQL_PLUGIN_IMPORT ulong max_connections;
+extern ulong max_digest_length;
 extern ulong max_connect_errors, connect_timeout;
 extern my_bool slave_allow_batching;
 extern my_bool allow_slave_start;
diff --git a/sql/sp_head.cc b/sql/sp_head.cc
index d59e0aec541..e181e14611b 100644
--- a/sql/sp_head.cc
+++ b/sql/sp_head.cc
@@ -1365,8 +1365,13 @@ sp_head::execute(THD *thd, bool merge_da_on_success)
     if (thd->locked_tables_mode <= LTM_LOCK_TABLES)
       thd->user_var_events_alloc= thd->mem_root;
 
+    sql_digest_state *parent_digest= thd->m_digest;
+    thd->m_digest= NULL;
+
     err_status= i->execute(thd, &ip);
 
+    thd->m_digest= parent_digest;
+
     if (i->free_list)
       cleanup_items(i->free_list);
 
diff --git a/sql/sql_class.cc b/sql/sql_class.cc
index 1ef0827b943..ed2bddd7e8d 100644
--- a/sql/sql_class.cc
+++ b/sql/sql_class.cc
@@ -874,6 +874,7 @@ THD::THD()
    stmt_depends_on_first_successful_insert_id_in_prev_stmt(FALSE),
    m_examined_row_count(0),
    accessed_rows_and_keys(0),
+   m_digest(NULL),
    m_statement_psi(NULL),
    m_idle_psi(NULL),
    thread_id(0),
@@ -1044,6 +1045,13 @@ THD::THD()
   substitute_null_with_insert_id = FALSE;
   thr_lock_info_init(&lock_info); /* safety: will be reset after start */
 
+  m_token_array= NULL;
+  if (max_digest_length > 0)
+  {
+    m_token_array= (unsigned char*) my_malloc(max_digest_length,
+                                              MYF(MY_WME|MY_THREAD_SPECIFIC));
+  }
+
   m_internal_handler= NULL;
   m_binlog_invoker= INVOKER_NONE;
   arena_for_cached_items= 0;
@@ -1625,6 +1633,7 @@ THD::~THD()
 #endif
 
   free_root(&main_mem_root, MYF(0));
+  my_free(m_token_array);
   main_da.free_memory();
   if (status_var.memory_used != 0)
   {
diff --git a/sql/sql_class.h b/sql/sql_class.h
index 0746ac79b97..a8d8444571e 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -38,6 +38,8 @@
 #include "violite.h"              /* vio_is_connected */
 #include "thr_lock.h"             /* thr_lock_type, THR_LOCK_DATA,
                                      THR_LOCK_INFO */
+#include "sql_digest_stream.h"            // sql_digest_state
+
 #include <mysql/psi/mysql_stage.h>
 #include <mysql/psi/mysql_statement.h>
 #include <mysql/psi/mysql_idle.h>
@@ -2505,6 +2507,13 @@ public:
   PROFILING  profiling;
 #endif
 
+  /** Current statement digest. */
+  sql_digest_state *m_digest;
+  /** Current statement digest token array. */
+  unsigned char *m_token_array;
+  /** Top level statement digest. */
+  sql_digest_state m_digest_state;
+
   /** Current statement instrumentation. */
   PSI_statement_locker *m_statement_psi;
 #ifdef HAVE_PSI_STATEMENT_INTERFACE
diff --git a/sql/sql_cursor.cc b/sql/sql_cursor.cc
index 99b7b1e58d0..c09f3269d7a 100644
--- a/sql/sql_cursor.cc
+++ b/sql/sql_cursor.cc
@@ -98,6 +98,7 @@ public:
 int mysql_open_cursor(THD *thd, select_result *result,
                       Server_side_cursor **pcursor)
 {
+  sql_digest_state *parent_digest;
   PSI_statement_locker *parent_locker;
   select_result *save_result;
   Select_materialize *result_materialize;
@@ -117,11 +118,14 @@ int mysql_open_cursor(THD *thd, select_result *result,
                          &thd->security_ctx->priv_user[0],
                          (char *) thd->security_ctx->host_or_ip,
                          2);
+  parent_digest= thd->m_digest;
   parent_locker= thd->m_statement_psi;
+  thd->m_digest= NULL;
   thd->m_statement_psi= NULL;
   /* Mark that we can't use query cache with cursors */
   thd->query_cache_is_applicable= 0;
   rc= mysql_execute_command(thd);
+  thd->m_digest= parent_digest;
   thd->m_statement_psi= parent_locker;
   MYSQL_QUERY_EXEC_DONE(rc);
 
diff --git a/sql/sql_digest.cc b/sql/sql_digest.cc
new file mode 100644
index 00000000000..324f2fbd428
--- /dev/null
+++ b/sql/sql_digest.cc
@@ -0,0 +1,683 @@
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; version 2 of the License.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software Foundation,
+  51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
+
+/*
+  This code needs extra visibility in the lexer structures
+*/
+
+#include "my_global.h"
+#include "my_md5.h"
+#include "mysqld_error.h"
+
+#include "sql_string.h"
+#include "sql_class.h"
+#include "sql_lex.h"
+#include "sql_digest.h"
+#include "sql_digest_stream.h"
+
+#include "sql_get_diagnostics.h"
+
+#ifdef NEVER
+#include "my_sys.h"
+#include "sql_signal.h"
+#endif
+
+/* Generated code */
+#include "sql_yacc.h"
+#define LEX_TOKEN_WITH_DEFINITION
+#include "lex_token.h"
+
+/* Name pollution from sql/sql_lex.h */
+#ifdef LEX_YYSTYPE
+#undef LEX_YYSTYPE
+#endif
+
+#define LEX_YYSTYPE YYSTYPE*
+
+#define SIZE_OF_A_TOKEN 2
+
+/**
+  Read a single token from token array.
+*/
+inline uint read_token(const sql_digest_storage *digest_storage,
+                       uint index, uint *tok)
+{
+  uint safe_byte_count= digest_storage->m_byte_count;
+
+  if (index + SIZE_OF_A_TOKEN <= safe_byte_count &&
+      safe_byte_count <= digest_storage->m_token_array_length)
+  {
+    const unsigned char *src= & digest_storage->m_token_array[index];
+    *tok= src[0] | (src[1] << 8);
+    return index + SIZE_OF_A_TOKEN;
+  }
+
+  /* The input byte stream is exhausted. */
+  *tok= 0;
+  return MAX_DIGEST_STORAGE_SIZE + 1;
+}
+
+/**
+  Store a single token in token array.
+*/
+inline void store_token(sql_digest_storage* digest_storage, uint token)
+{
+  DBUG_ASSERT(digest_storage->m_byte_count <= digest_storage->m_token_array_length);
+
+  if (digest_storage->m_byte_count + SIZE_OF_A_TOKEN <= digest_storage->m_token_array_length)
+  {
+    unsigned char* dest= & digest_storage->m_token_array[digest_storage->m_byte_count];
+    dest[0]= token & 0xff;
+    dest[1]= (token >> 8) & 0xff;
+    digest_storage->m_byte_count+= SIZE_OF_A_TOKEN;
+  }
+  else
+  {
+    digest_storage->m_full= true;
+  }
+}
+
+/**
+  Read an identifier from token array.
+*/
+inline uint read_identifier(const sql_digest_storage* digest_storage,
+                            uint index, char ** id_string, int *id_length)
+{
+  uint new_index;
+  uint safe_byte_count= digest_storage->m_byte_count;
+
+  DBUG_ASSERT(index <= safe_byte_count);
+  DBUG_ASSERT(safe_byte_count <= digest_storage->m_token_array_length);
+
+  /*
+    token + length + string are written in an atomic way,
+    so we do always expect a length + string here
+  */
+
+  uint bytes_needed= SIZE_OF_A_TOKEN;
+  /* If we can read token and identifier length */
+  if ((index + bytes_needed) <= safe_byte_count)
+  {
+    const unsigned char *src= & digest_storage->m_token_array[index];
+    /* Read the length of identifier */
+    uint length= src[0] | (src[1] << 8);
+    bytes_needed+= length;
+    /* If we can read entire identifier from token array */
+    if ((index + bytes_needed) <= safe_byte_count)
+    {
+      *id_string= (char *) (src + 2);
+      *id_length= length;
+
+      new_index= index + bytes_needed;
+      DBUG_ASSERT(new_index <= safe_byte_count);
+      return new_index;
+    }
+  }
+
+  /* The input byte stream is exhausted. */
+  return MAX_DIGEST_STORAGE_SIZE + 1;
+}
+
+/**
+  Store an identifier in token array.
+*/
+inline void store_token_identifier(sql_digest_storage* digest_storage,
+                                   uint token,
+                                   size_t id_length, const char *id_name)
+{
+  DBUG_ASSERT(digest_storage->m_byte_count <= digest_storage->m_token_array_length);
+
+  size_t bytes_needed= 2 * SIZE_OF_A_TOKEN + id_length;
+  if (digest_storage->m_byte_count + bytes_needed <= (unsigned int)digest_storage->m_token_array_length)
+  {
+    unsigned char* dest= & digest_storage->m_token_array[digest_storage->m_byte_count];
+    /* Write the token */
+    dest[0]= token & 0xff;
+    dest[1]= (token >> 8) & 0xff;
+    /* Write the string length */
+    dest[2]= id_length & 0xff;
+    dest[3]= (id_length >> 8) & 0xff;
+    /* Write the string data */
+    if (id_length > 0)
+      memcpy((char *)(dest + 4), id_name, id_length);
+    digest_storage->m_byte_count+= bytes_needed;
+  }
+  else
+  {
+    digest_storage->m_full= true;
+  }
+}
+
+void compute_digest_md5(const sql_digest_storage *digest_storage, unsigned char *md5)
+{
+  compute_md5_hash((char *) md5,
+                   (const char *) digest_storage->m_token_array,
+                   digest_storage->m_byte_count);
+}
+
+/*
+  Iterate token array and updates digest_text.
+*/
+void compute_digest_text(const sql_digest_storage* digest_storage,
+                         String *digest_text)
+{
+  DBUG_ASSERT(digest_storage != NULL);
+  uint byte_count= digest_storage->m_byte_count;
+  String *digest_output= digest_text;
+  uint tok= 0;
+  uint current_byte= 0;
+  lex_token_string *tok_data;
+
+  /* Reset existing data */
+  digest_output->length(0);
+
+  if (byte_count > digest_storage->m_token_array_length)
+  {
+    digest_output->append("\0", 1);
+    return;
+  }
+
+  /* Convert text to utf8 */
+  const CHARSET_INFO *from_cs= get_charset(digest_storage->m_charset_number, MYF(0));
+  const CHARSET_INFO *to_cs= &my_charset_utf8_bin;
+
+  if (from_cs == NULL)
+  {
+    /*
+      Can happen, as we do dirty reads on digest_storage,
+      which can be written to in another thread.
+    */
+    digest_output->append("\0", 1);
+    return;
+  }
+
+  char id_buffer[NAME_LEN + 1]= {'\0'};
+  char *id_string;
+  size_t id_length;
+  bool convert_text= !my_charset_same(from_cs, to_cs);
+
+  while (current_byte < byte_count)
+  {
+    current_byte= read_token(digest_storage, current_byte, &tok);
+
+    if (tok <= 0 || tok >= array_elements(lex_token_array)
+        || current_byte > max_digest_length)
+      return;
+
+    tok_data= &lex_token_array[tok];
+
+    switch (tok)
+    {
+    /* All identifiers are printed with their name. */
+    case IDENT:
+    case IDENT_QUOTED:
+      {
+        char *id_ptr= NULL;
+        int id_len= 0;
+        uint err_cs= 0;
+
+        /* Get the next identifier from the storage buffer. */
+        current_byte= read_identifier(digest_storage, current_byte,
+                                      &id_ptr, &id_len);
+        if (current_byte > max_digest_length)
+          return;
+
+        if (convert_text)
+        {
+          /* Verify that the converted text will fit. */
+          if (to_cs->mbmaxlen*id_len > NAME_LEN)
+          {
+            digest_output->append("...", 3);
+            break;
+          }
+          /* Convert identifier string into the storage character set. */
+          id_length= my_convert(id_buffer, NAME_LEN, to_cs,
+                                id_ptr, id_len, from_cs, &err_cs);
+          id_string= id_buffer;
+        }
+        else
+        {
+          id_string= id_ptr;
+          id_length= id_len;
+        }
+
+        if (id_length == 0 || err_cs != 0)
+        {
+          break;
+        }
+        /* Copy the converted identifier into the digest string. */
+        if (tok == IDENT_QUOTED)
+          digest_output->append("`", 1);
+        if (id_length > 0)
+          digest_output->append(id_string, id_length);
+        if (tok == IDENT_QUOTED)
+          digest_output->append("`", 1);
+        digest_output->append(" ", 1);
+      }
+      break;
+
+    /* Everything else is printed as is. */
+    default:
+      /*
+        Make sure not to overflow digest_text buffer.
+        +1 is to make sure extra space for ' '.
+      */
+      int tok_length= tok_data->m_token_length;
+
+      digest_output->append(tok_data->m_token_string, tok_length);
+      if (tok_data->m_append_space)
+        digest_output->append(" ", 1);
+      break;
+    }
+  }
+}
+
+static inline uint peek_token(const sql_digest_storage *digest, uint index)
+{
+  uint token;
+  DBUG_ASSERT(index + SIZE_OF_A_TOKEN <= digest->m_byte_count);
+  DBUG_ASSERT(digest->m_byte_count <=  digest->m_token_array_length);
+
+  token= ((digest->m_token_array[index + 1])<<8) | digest->m_token_array[index];
+  return token;
+}
+
+/**
+  Function to read last two tokens from token array. If an identifier
+  is found, do not look for token before that.
+*/
+static inline void peek_last_two_tokens(const sql_digest_storage* digest_storage,
+                                        uint last_id_index, uint *t1, uint *t2)
+{
+  uint byte_count= digest_storage->m_byte_count;
+  uint peek_index= byte_count;
+
+  if (last_id_index + SIZE_OF_A_TOKEN <= peek_index)
+  {
+    /* Take last token. */
+    peek_index-= SIZE_OF_A_TOKEN;
+    *t1= peek_token(digest_storage, peek_index);
+
+    if (last_id_index + SIZE_OF_A_TOKEN <= peek_index)
+    {
+      /* Take 2nd token from last. */
+      peek_index-= SIZE_OF_A_TOKEN;
+      *t2= peek_token(digest_storage, peek_index);
+    }
+    else
+    {
+      *t2= TOK_UNUSED;
+    }
+  }
+  else
+  {
+    *t1= TOK_UNUSED;
+    *t2= TOK_UNUSED;
+  }
+}
+
+/**
+  Function to read last three tokens from token array. If an identifier
+  is found, do not look for token before that.
+*/
+static inline void peek_last_three_tokens(const sql_digest_storage* digest_storage,
+                                          uint last_id_index, uint *t1, uint *t2, uint *t3)
+{
+  uint byte_count= digest_storage->m_byte_count;
+  uint peek_index= byte_count;
+
+  if (last_id_index + SIZE_OF_A_TOKEN <= peek_index)
+  {
+    /* Take last token. */
+    peek_index-= SIZE_OF_A_TOKEN;
+    *t1= peek_token(digest_storage, peek_index);
+
+    if (last_id_index + SIZE_OF_A_TOKEN <= peek_index)
+    {
+      /* Take 2nd token from last. */
+      peek_index-= SIZE_OF_A_TOKEN;
+      *t2= peek_token(digest_storage, peek_index);
+
+      if (last_id_index + SIZE_OF_A_TOKEN <= peek_index)
+      {
+        /* Take 3rd token from last. */
+        peek_index-= SIZE_OF_A_TOKEN;
+        *t3= peek_token(digest_storage, peek_index);
+      }
+      else
+      {
+        *t3= TOK_UNUSED;
+      }
+    }
+    else
+    {
+      *t2= TOK_UNUSED;
+      *t3= TOK_UNUSED;
+    }
+  }
+  else
+  {
+    *t1= TOK_UNUSED;
+    *t2= TOK_UNUSED;
+    *t3= TOK_UNUSED;
+  }
+}
+
+sql_digest_state* digest_add_token(sql_digest_state *state,
+                                   uint token,
+                                   LEX_YYSTYPE yylval)
+{
+  sql_digest_storage *digest_storage= NULL;
+
+  digest_storage= &state->m_digest_storage;
+
+  /*
+    Stop collecting further tokens if digest storage is full or
+    if END token is received.
+  */
+  if (digest_storage->m_full || token == END_OF_INPUT)
+    return NULL;
+
+  /*
+    Take last_token 2 tokens collected till now. These tokens will be used
+    in reduce for normalisation. Make sure not to consider ID tokens in reduce.
+  */
+  uint last_token;
+  uint last_token2;
+
+  switch (token)
+  {
+    case NUM:
+    case LONG_NUM:
+    case ULONGLONG_NUM:
+    case DECIMAL_NUM:
+    case FLOAT_NUM:
+    case BIN_NUM:
+    case HEX_NUM:
+    {
+      bool found_unary;
+      do
+      {
+        found_unary= false;
+        peek_last_two_tokens(digest_storage, state->m_last_id_index,
+                             &last_token, &last_token2);
+
+        if ((last_token == '-') || (last_token == '+'))
+        {
+          /*
+            We need to differentiate:
+            - a <unary minus> operator
+            - a <unary plus> operator
+            from
+            - a <binary minus> operator
+            - a <binary plus> operator
+            to only reduce "a = -1" to "a = ?", and not change "b - 1" to "b ?"
+
+            Binary operators are found inside an expression,
+            while unary operators are found at the beginning of an expression, or after operators.
+
+            To achieve this, every token that is followed by an <expr> expression
+            in the SQL grammar is flagged.
+            See sql/sql_yacc.yy
+            See sql/gen_lex_token.cc
+
+            For example,
+            "(-1)" is parsed as "(", "-", NUM, ")", and lex_token_array["("].m_start_expr is true,
+            so reduction of the "-" NUM is done, the result is "(?)".
+            "(a-1)" is parsed as "(", ID, "-", NUM, ")", and lex_token_array[ID].m_start_expr is false,
+            so the operator is binary, no reduction is done, and the result is "(a-?)".
+          */
+          if (lex_token_array[last_token2].m_start_expr)
+          {
+            /*
+              REDUCE:
+              TOK_GENERIC_VALUE := (UNARY_PLUS | UNARY_MINUS) (NUM | LOG_NUM | ... | FLOAT_NUM)
+
+              REDUCE:
+              TOK_GENERIC_VALUE := (UNARY_PLUS | UNARY_MINUS) TOK_GENERIC_VALUE
+            */
+            token= TOK_GENERIC_VALUE;
+            digest_storage->m_byte_count-= SIZE_OF_A_TOKEN;
+            found_unary= true;
+          }
+        }
+      } while (found_unary);
+    }
+    /* fall through, for case NULL_SYM below */
+    case LEX_HOSTNAME:
+    case TEXT_STRING:
+    case NCHAR_STRING:
+    case PARAM_MARKER:
+    {
+      /*
+        REDUCE:
+        TOK_GENERIC_VALUE := BIN_NUM | DECIMAL_NUM | ... | ULONGLONG_NUM
+      */
+      token= TOK_GENERIC_VALUE;
+
+      peek_last_two_tokens(digest_storage, state->m_last_id_index,
+                           &last_token, &last_token2);
+
+      if ((last_token2 == TOK_GENERIC_VALUE ||
+           last_token2 == TOK_GENERIC_VALUE_LIST) &&
+          (last_token == ','))
+      {
+        /*
+          REDUCE:
+          TOK_GENERIC_VALUE_LIST :=
+            TOK_GENERIC_VALUE ',' TOK_GENERIC_VALUE
+
+          REDUCE:
+          TOK_GENERIC_VALUE_LIST :=
+            TOK_GENERIC_VALUE_LIST ',' TOK_GENERIC_VALUE
+        */
+        digest_storage->m_byte_count-= 2*SIZE_OF_A_TOKEN;
+        token= TOK_GENERIC_VALUE_LIST;
+      }
+      /*
+        Add this token or the resulting reduce to digest storage.
+      */
+      store_token(digest_storage, token);
+      break;
+    }
+    case ')':
+    {
+      peek_last_two_tokens(digest_storage, state->m_last_id_index,
+                           &last_token, &last_token2);
+
+      if (last_token == TOK_GENERIC_VALUE &&
+          last_token2 == '(')
+      {
+        /*
+          REDUCE:
+          TOK_ROW_SINGLE_VALUE :=
+            '(' TOK_GENERIC_VALUE ')'
+        */
+        digest_storage->m_byte_count-= 2*SIZE_OF_A_TOKEN;
+        token= TOK_ROW_SINGLE_VALUE;
+
+        /* Read last two tokens again */
+        peek_last_two_tokens(digest_storage, state->m_last_id_index,
+                             &last_token, &last_token2);
+
+        if ((last_token2 == TOK_ROW_SINGLE_VALUE ||
+             last_token2 == TOK_ROW_SINGLE_VALUE_LIST) &&
+            (last_token == ','))
+        {
+          /*
+            REDUCE:
+            TOK_ROW_SINGLE_VALUE_LIST :=
+              TOK_ROW_SINGLE_VALUE ',' TOK_ROW_SINGLE_VALUE
+
+            REDUCE:
+            TOK_ROW_SINGLE_VALUE_LIST :=
+              TOK_ROW_SINGLE_VALUE_LIST ',' TOK_ROW_SINGLE_VALUE
+          */
+          digest_storage->m_byte_count-= 2*SIZE_OF_A_TOKEN;
+          token= TOK_ROW_SINGLE_VALUE_LIST;
+        }
+      }
+      else if (last_token == TOK_GENERIC_VALUE_LIST &&
+               last_token2 == '(')
+      {
+        /*
+          REDUCE:
+          TOK_ROW_MULTIPLE_VALUE :=
+            '(' TOK_GENERIC_VALUE_LIST ')'
+        */
+        digest_storage->m_byte_count-= 2*SIZE_OF_A_TOKEN;
+        token= TOK_ROW_MULTIPLE_VALUE;
+
+        /* Read last two tokens again */
+        peek_last_two_tokens(digest_storage, state->m_last_id_index,
+                             &last_token, &last_token2);
+
+        if ((last_token2 == TOK_ROW_MULTIPLE_VALUE ||
+             last_token2 == TOK_ROW_MULTIPLE_VALUE_LIST) &&
+            (last_token == ','))
+        {
+          /*
+            REDUCE:
+            TOK_ROW_MULTIPLE_VALUE_LIST :=
+              TOK_ROW_MULTIPLE_VALUE ',' TOK_ROW_MULTIPLE_VALUE
+
+            REDUCE:
+            TOK_ROW_MULTIPLE_VALUE_LIST :=
+              TOK_ROW_MULTIPLE_VALUE_LIST ',' TOK_ROW_MULTIPLE_VALUE
+          */
+          digest_storage->m_byte_count-= 2*SIZE_OF_A_TOKEN;
+          token= TOK_ROW_MULTIPLE_VALUE_LIST;
+        }
+      }
+      /*
+        Add this token or the resulting reduce to digest storage.
+      */
+      store_token(digest_storage, token);
+      break;
+    }
+    case IDENT:
+    case IDENT_QUOTED:
+    {
+      YYSTYPE *lex_token= yylval;
+      char *yytext= lex_token->lex_str.str;
+      size_t yylen= lex_token->lex_str.length;
+
+      /* Add this token and identifier string to digest storage. */
+      store_token_identifier(digest_storage, token, yylen, yytext);
+
+      /* Update the index of last identifier found. */
+      state->m_last_id_index= digest_storage->m_byte_count;
+      break;
+    }
+    default:
+    {
+      /* Add this token to digest storage. */
+      store_token(digest_storage, token);
+      break;
+    }
+  }
+
+  return state;
+}
+
+sql_digest_state* digest_reduce_token(sql_digest_state *state,
+                                      uint token_left, uint token_right)
+{
+  sql_digest_storage *digest_storage= NULL;
+
+  digest_storage= &state->m_digest_storage;
+
+  /*
+    Stop collecting further tokens if digest storage is full.
+  */
+  if (digest_storage->m_full)
+    return NULL;
+
+  uint last_token;
+  uint last_token2;
+  uint last_token3;
+  uint token_to_push= TOK_UNUSED;
+
+  peek_last_two_tokens(digest_storage, state->m_last_id_index,
+                       &last_token, &last_token2);
+
+  /*
+    There is only one caller of digest_reduce_token(),
+    see sql/sql_yacc.yy, rule literal := NULL_SYM.
+    REDUCE:
+      token_left := token_right
+    Used for:
+      TOK_GENERIC_VALUE := NULL_SYM
+  */
+
+  if (last_token == token_right)
+  {
+    /*
+      Current stream is like:
+        TOKEN_X TOKEN_RIGHT .
+      REDUCE to
+        TOKEN_X TOKEN_LEFT .
+    */
+    digest_storage->m_byte_count-= SIZE_OF_A_TOKEN;
+    store_token(digest_storage, token_left);
+  }
+  else
+  {
+    /*
+      Current stream is like:
+        TOKEN_X TOKEN_RIGHT TOKEN_Y .
+      Pop TOKEN_Y
+        TOKEN_X TOKEN_RIGHT . TOKEN_Y
+      REDUCE to
+        TOKEN_X TOKEN_LEFT . TOKEN_Y
+    */
+    DBUG_ASSERT(last_token2 == token_right);
+    digest_storage->m_byte_count-= 2 * SIZE_OF_A_TOKEN;
+    store_token(digest_storage, token_left);
+    token_to_push= last_token;
+  }
+
+  peek_last_three_tokens(digest_storage, state->m_last_id_index,
+                         &last_token, &last_token2, &last_token3);
+
+  if ((last_token3 == TOK_GENERIC_VALUE ||
+       last_token3 == TOK_GENERIC_VALUE_LIST) &&
+      (last_token2 == ',') &&
+      (last_token == TOK_GENERIC_VALUE))
+  {
+    /*
+      REDUCE:
+      TOK_GENERIC_VALUE_LIST :=
+        TOK_GENERIC_VALUE ',' TOK_GENERIC_VALUE
+
+      REDUCE:
+      TOK_GENERIC_VALUE_LIST :=
+        TOK_GENERIC_VALUE_LIST ',' TOK_GENERIC_VALUE
+    */
+    digest_storage->m_byte_count-= 3*SIZE_OF_A_TOKEN;
+    store_token(digest_storage, TOK_GENERIC_VALUE_LIST);
+  }
+
+  if (token_to_push != TOK_UNUSED)
+  {
+    /*
+      Push TOKEN_Y
+    */
+    store_token(digest_storage, token_to_push);
+  }
+
+  return state;
+}
+
diff --git a/sql/sql_digest.h b/sql/sql_digest.h
new file mode 100644
index 00000000000..ce159283d4d
--- /dev/null
+++ b/sql/sql_digest.h
@@ -0,0 +1,130 @@
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; version 2 of the License.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software Foundation,
+  51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
+
+#ifndef SQL_DIGEST_H
+#define SQL_DIGEST_H
+
+#include <string.h>
+class String;
+#include "my_md5.h"
+
+#define MAX_DIGEST_STORAGE_SIZE (1024*1024)
+
+/**
+  Structure to store token count/array for a statement
+  on which digest is to be calculated.
+*/
+struct sql_digest_storage
+{
+  bool m_full;
+  uint m_byte_count;
+  unsigned char m_md5[MD5_HASH_SIZE];
+  /** Character set number. */
+  uint m_charset_number;
+  /**
+    Token array.
+    Token array is an array of bytes to store tokens received during parsing.
+    Following is the way token array is formed.
+    ... &lt;non-id-token&gt; &lt;non-id-token&gt; &lt;id-token&gt; &lt;id_len&gt; &lt;id_text&gt; ...
+    For Example:
+    SELECT * FROM T1;
+    &lt;SELECT_TOKEN&gt; &lt;*&gt; &lt;FROM_TOKEN&gt; &lt;ID_TOKEN&gt; &lt;2&gt; &lt;T1&gt;
+  */
+  unsigned char *m_token_array;
+  /* Length of the token array to be considered for DIGEST_TEXT calculation. */
+  uint m_token_array_length;
+
+  sql_digest_storage()
+  {
+    reset(NULL, 0);
+  }
+
+  inline void reset(unsigned char *token_array, uint length)
+  {
+    m_token_array= token_array;
+    m_token_array_length= length;
+    reset();
+  }
+
+  inline void reset()
+  {
+    m_full= false;
+    m_byte_count= 0;
+    m_charset_number= 0;
+    if (m_token_array_length > 0)
+    {
+      memset(m_token_array, 0, m_token_array_length);
+    }
+    memset(m_md5, 0, MD5_HASH_SIZE);
+  }
+
+  inline bool is_empty()
+  {
+    return (m_byte_count == 0);
+  }
+
+  inline void copy(const sql_digest_storage *from)
+  {
+    /*
+      Keep in mind this is a dirty copy of something that may change,
+      as the thread producing the digest is executing concurrently,
+      without any lock enforced.
+    */
+    uint byte_count_copy= m_token_array_length < from->m_byte_count ?
+                          m_token_array_length : from->m_byte_count;
+
+    if (byte_count_copy > 0)
+    {
+      m_full= from->m_full;
+      m_byte_count= byte_count_copy;
+      m_charset_number= from->m_charset_number;
+      memcpy(m_token_array, from->m_token_array, m_byte_count);
+      memcpy(m_md5, from->m_md5, MD5_HASH_SIZE);
+    }
+    else
+    {
+      m_full= false;
+      m_byte_count= 0;
+      m_charset_number= 0;
+    }
+  }
+};
+typedef struct sql_digest_storage sql_digest_storage;
+
+/**
+  Compute a digest hash.
+  @param digest_storage The digest
+  @param [out] md5 The computed digest hash. This parameter is a buffer of size @c MD5_HASH_SIZE.
+*/
+void compute_digest_md5(const sql_digest_storage *digest_storage, unsigned char *md5);
+
+/**
+  Compute a digest text.
+  A 'digest text' is a textual representation of a query,
+  where:
+  - comments are removed,
+  - non significant spaces are removed,
+  - literal values are replaced with a special '?' marker,
+  - lists of values are collapsed using a shorter notation
+  @param digest_storage The digest
+  @param [out] digest_text
+  @param digest_text_length Size of @c digest_text.
+  @param [out] truncated true if the text representation was truncated
+*/
+void compute_digest_text(const sql_digest_storage *digest_storage,
+                         String *digest_text);
+
+#endif
+
diff --git a/sql/sql_digest_stream.h b/sql/sql_digest_stream.h
new file mode 100644
index 00000000000..55f7e2293c6
--- /dev/null
+++ b/sql/sql_digest_stream.h
@@ -0,0 +1,51 @@
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; version 2 of the License.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software Foundation,
+  51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
+
+#ifndef SQL_DIGEST_STREAM_H
+#define SQL_DIGEST_STREAM_H
+
+#include "sql_digest.h"
+
+/**
+  State data storage for @c digest_start, @c digest_add_token.
+  This structure extends the @c sql_digest_storage structure
+  with temporary state used only during parsing.
+*/
+struct sql_digest_state
+{
+  /**
+    Index, in the digest token array, of the last identifier seen.
+    Reduce rules used in the digest computation can not
+    apply to tokens seen before an identifier.
+    @sa digest_add_token
+  */
+  int m_last_id_index;
+  sql_digest_storage m_digest_storage;
+
+  inline void reset(unsigned char *token_array, uint length)
+  {
+    m_last_id_index= 0;
+    m_digest_storage.reset(token_array, length);
+  }
+
+  inline bool is_empty()
+  {
+    return m_digest_storage.is_empty();
+  }
+};
+typedef struct sql_digest_state sql_digest_state;
+
+#endif
+
diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc
index ba7d101a4cd..d8f40897a59 100644
--- a/sql/sql_lex.cc
+++ b/sql/sql_lex.cc
@@ -436,6 +436,21 @@ void Lex_input_stream::body_utf8_append_literal(THD *thd,
   m_cpp_utf8_processed_ptr= end_ptr;
 }
 
+void Lex_input_stream::add_digest_token(uint token, LEX_YYSTYPE yylval)
+{
+  if (m_digest != NULL)
+  {
+    m_digest= digest_add_token(m_digest, token, yylval);
+  }
+}
+
+void Lex_input_stream::reduce_digest_token(uint token_left, uint token_right)
+{
+  if (m_digest != NULL)
+  {
+    m_digest= digest_reduce_token(m_digest, token_left, token_right);
+  }
+}
 
 /*
   This is called before every query that is to be parsed.
@@ -982,7 +997,7 @@ int MYSQLlex(YYSTYPE *yylval, THD *thd)
     lip->lookahead_token= -1;
     *yylval= *(lip->lookahead_yylval);
     lip->lookahead_yylval= NULL;
-    lip->m_digest_psi= MYSQL_ADD_TOKEN(lip->m_digest_psi, token, yylval);
+    lip->add_digest_token(token, yylval);
     return token;
   }
 
@@ -1000,12 +1015,10 @@ int MYSQLlex(YYSTYPE *yylval, THD *thd)
     token= lex_one_token(yylval, thd);
     switch(token) {
     case CUBE_SYM:
-      lip->m_digest_psi= MYSQL_ADD_TOKEN(lip->m_digest_psi, WITH_CUBE_SYM,
-                                         yylval);
+      lip->add_digest_token(WITH_CUBE_SYM, yylval);
       return WITH_CUBE_SYM;
     case ROLLUP_SYM:
-      lip->m_digest_psi= MYSQL_ADD_TOKEN(lip->m_digest_psi, WITH_ROLLUP_SYM,
-                                         yylval);
+      lip->add_digest_token(WITH_ROLLUP_SYM, yylval);
       return WITH_ROLLUP_SYM;
     default:
       /*
@@ -1014,7 +1027,7 @@ int MYSQLlex(YYSTYPE *yylval, THD *thd)
       lip->lookahead_yylval= lip->yylval;
       lip->yylval= NULL;
       lip->lookahead_token= token;
-      lip->m_digest_psi= MYSQL_ADD_TOKEN(lip->m_digest_psi, WITH, yylval);
+      lip->add_digest_token(WITH, yylval);
       return WITH;
     }
     break;
@@ -1022,7 +1035,7 @@ int MYSQLlex(YYSTYPE *yylval, THD *thd)
     break;
   }
 
-  lip->m_digest_psi= MYSQL_ADD_TOKEN(lip->m_digest_psi, token, yylval);
+  lip->add_digest_token(token, yylval);
   return token;
 }
 
diff --git a/sql/sql_lex.h b/sql/sql_lex.h
index 38f1417b40c..b17f0f4ec63 100644
--- a/sql/sql_lex.h
+++ b/sql/sql_lex.h
@@ -47,6 +47,7 @@ class sys_var;
 class Item_func_match;
 class File_parser;
 class Key_part_spec;
+struct sql_digest_state;
 
 #ifdef MYSQL_SERVER
 /*
@@ -2048,6 +2049,10 @@ public:
   /** LALR(2) resolution, value of the look ahead token.*/
   LEX_YYSTYPE lookahead_yylval;
 
+  void add_digest_token(uint token, LEX_YYSTYPE yylval);
+
+  void reduce_digest_token(uint token_left, uint token_right);
+
 private:
   /** Pointer to the current position in the raw input stream. */
   char *m_ptr;
@@ -2167,7 +2172,7 @@ public:
   /**
     Current statement digest instrumentation. 
   */
-  PSI_digest_locker* m_digest_psi;
+  sql_digest_state* m_digest;
 };
 
 /**
@@ -2863,6 +2868,18 @@ public:
 };
 
 /**
+  Input parameters to the parser.
+*/
+struct Parser_input
+{
+  bool m_compute_digest;
+
+  Parser_input()
+    : m_compute_digest(false)
+  {}
+};
+
+/**
   Internal state of the parser.
   The complete state consist of:
   - state data used during lexical parsing,
@@ -2889,9 +2906,15 @@ public:
   ~Parser_state()
   {}
 
+  Parser_input m_input;
   Lex_input_stream m_lip;
   Yacc_state m_yacc;
 
+  /**
+    Current performance digest instrumentation. 
+  */
+  PSI_digest_locker* m_digest_psi;
+
   void reset(char *found_semicolon, unsigned int length)
   {
     m_lip.reset(found_semicolon, length);
@@ -2899,6 +2922,11 @@ public:
   }
 };
 
+extern sql_digest_state *
+digest_add_token(sql_digest_state *state, uint token, LEX_YYSTYPE yylval);
+
+extern sql_digest_state *
+digest_reduce_token(sql_digest_state *state, uint token_left, uint token_right);
 
 struct st_lex_local: public LEX
 {
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index 9ecf168c60e..5635e9ad4b7 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -83,6 +83,8 @@
 #include "rpl_handler.h"
 #include "rpl_mi.h"
 
+#include "sql_digest.h"
+
 #include "sp_head.h"
 #include "sp.h"
 #include "sp_cache.h"
@@ -949,6 +951,7 @@ bool do_command(THD *thd)
     /* Mark the statement completed. */
     MYSQL_END_STATEMENT(thd->m_statement_psi, thd->get_stmt_da());
     thd->m_statement_psi= NULL;
+    thd->m_digest= NULL;
 
     if (net->error != 3)
     {
@@ -998,6 +1001,7 @@ bool do_command(THD *thd)
 
 out:
   /* The statement instrumentation must be closed in all cases. */
+  DBUG_ASSERT(thd->m_digest == NULL);
   DBUG_ASSERT(thd->m_statement_psi == NULL);
   DBUG_RETURN(return_value);
 }
@@ -1278,6 +1282,10 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
   }
   case COM_QUERY:
   {
+    DBUG_ASSERT(thd->m_digest == NULL);
+    thd->m_digest= & thd->m_digest_state;
+    thd->m_digest->reset(thd->m_token_array, max_digest_length);
+
     if (alloc_query(thd, packet, packet_length))
       break;					// fatal error is set
     MYSQL_QUERY_START(thd->query(), thd->thread_id,
@@ -1337,6 +1345,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
       /* PSI end */
       MYSQL_END_STATEMENT(thd->m_statement_psi, thd->get_stmt_da());
       thd->m_statement_psi= NULL;
+      thd->m_digest= NULL;
 
       /* DTRACE end */
       if (MYSQL_QUERY_DONE_ENABLED())
@@ -1357,6 +1366,8 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
                         (char *) thd->security_ctx->host_or_ip);
 
       /* PSI begin */
+      thd->m_digest= & thd->m_digest_state;
+
       thd->m_statement_psi= MYSQL_START_STATEMENT(&thd->m_statement_state,
                                                   com_statement_info[command].m_key,
                                                   thd->db, thd->db_length,
@@ -1741,6 +1752,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
   /* Performance Schema Interface instrumentation, end */
   MYSQL_END_STATEMENT(thd->m_statement_psi, thd->get_stmt_da());
   thd->m_statement_psi= NULL;
+  thd->m_digest= NULL;
 
   thd->set_time();
   dec_thread_running();
@@ -8551,11 +8563,27 @@ bool parse_sql(THD *thd, Parser_state *parser_state,
 
   thd->m_parser_state= parser_state;
 
-#ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
-  /* Start Digest */
-  thd->m_parser_state->m_lip.m_digest_psi=
-    MYSQL_DIGEST_START(do_pfs_digest ? thd->m_statement_psi : NULL);
-#endif
+  parser_state->m_digest_psi= NULL;
+  parser_state->m_lip.m_digest= NULL;
+
+  if (do_pfs_digest)
+  {
+    /* Start Digest */
+    parser_state->m_digest_psi= MYSQL_DIGEST_START(thd->m_statement_psi);
+
+    if (parser_state->m_input.m_compute_digest ||
+       (parser_state->m_digest_psi != NULL))
+    {
+      /*
+        If either:
+        - the caller wants to compute a digest
+        - the performance schema wants to compute a digest
+        set the digest listener in the lexer.
+      */
+      parser_state->m_lip.m_digest= thd->m_digest;
+      parser_state->m_lip.m_digest->m_digest_storage.m_charset_number= thd->charset()->number;
+    }
+  }
 
   /* Parse the query. */
 
@@ -8588,6 +8616,18 @@ bool parse_sql(THD *thd, Parser_state *parser_state,
   /* That's it. */
 
   ret_value= mysql_parse_status || thd->is_fatal_error;
+
+  if ((ret_value == 0) && (parser_state->m_digest_psi != NULL))
+  {
+    /*
+      On parsing success, record the digest in the performance schema.
+    */
+    DBUG_ASSERT(do_pfs_digest);
+    DBUG_ASSERT(thd->m_digest != NULL);
+    MYSQL_DIGEST_END(parser_state->m_digest_psi,
+                     & thd->m_digest->m_digest_storage);
+  }
+
   MYSQL_QUERY_PARSE_DONE(ret_value);
   DBUG_RETURN(ret_value);
 }
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index 03022c7ed19..9c7898b1b02 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -63,6 +63,7 @@
 #include "keycaches.h"
 #include "set_var.h"
 #include "rpl_mi.h"
+#include "lex_token.h"
 
 /* this is to get the bison compilation windows warnings out */
 #ifdef _MSC_VER
@@ -13370,6 +13371,13 @@ literal:
         | temporal_literal { $$= $1; }
         | NULL_SYM
           {
+            /*
+              For the digest computation, in this context only,
+              NULL is considered a literal, hence reduced to '?'
+              REDUCE:
+                TOK_GENERIC_VALUE := NULL_SYM
+            */
+            YYLIP->reduce_digest_token(TOK_GENERIC_VALUE, NULL_SYM);
             $$ = new (thd->mem_root) Item_null();
             if ($$ == NULL)
               MYSQL_YYABORT;
diff --git a/sql/sys_vars.cc b/sql/sys_vars.cc
index 21ea70def63..94466db5fd9 100644
--- a/sql/sys_vars.cc
+++ b/sql/sys_vars.cc
@@ -1313,6 +1313,12 @@ static Sys_var_ulong Sys_max_connect_errors(
        VALID_RANGE(1, UINT_MAX), DEFAULT(MAX_CONNECT_ERRORS),
        BLOCK_SIZE(1));
 
+static Sys_var_long Sys_max_digest_length(
+       "max_digest_length", "Maximum length considered for digest text.",
+       PARSED_EARLY READ_ONLY GLOBAL_VAR(max_digest_length),
+       CMD_LINE(REQUIRED_ARG),
+       VALID_RANGE(0, 1024 * 1024), DEFAULT(1024), BLOCK_SIZE(1));
+
 static bool check_max_delayed_threads(sys_var *self, THD *thd, set_var *var)
 {
   return var->type != OPT_GLOBAL &&
diff --git a/storage/perfschema/CMakeLists.txt b/storage/perfschema/CMakeLists.txt
index dcd0bbac15f..3b3ffae6357 100644
--- a/storage/perfschema/CMakeLists.txt
+++ b/storage/perfschema/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -21,31 +21,11 @@ INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}
 
 ADD_DEFINITIONS(-DMYSQL_SERVER)
 
-# Gen_pfs_lex_token
-IF(NOT CMAKE_CROSSCOMPILING)
-  ADD_EXECUTABLE(gen_pfs_lex_token gen_pfs_lex_token.cc)
-  # gen_pfs_lex_token itself depends on ${CMAKE_CURRENT_BINARY_DIR}/sql/sql_yacc.h
-  ADD_DEPENDENCIES(gen_pfs_lex_token GenServerSource)
-ENDIF()
-
-ADD_CUSTOM_COMMAND(
-  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/pfs_lex_token.h
-  COMMAND gen_pfs_lex_token > pfs_lex_token.h
-  DEPENDS gen_pfs_lex_token
-)
-
-SET(PFS_GEN_SOURCES
-  ${CMAKE_CURRENT_BINARY_DIR}/pfs_lex_token.h
-)
-
-SET_SOURCE_FILES_PROPERTIES(${PFS_GEN_SOURCES} PROPERTIES GENERATED 1)
-
 #
 # Maintainer: keep this list sorted, to avoid merge collisions.
 # Tip: ls -1 *.h, ls -1 *.cc
 #
 SET(PERFSCHEMA_SOURCES
-${PFS_GEN_SOURCES}
 ha_perfschema.h
 cursor_by_account.h
 cursor_by_host.h
diff --git a/storage/perfschema/pfs.cc b/storage/perfschema/pfs.cc
index fa87269a054..ea8a04a78ae 100644
--- a/storage/perfschema/pfs.cc
+++ b/storage/perfschema/pfs.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -4455,7 +4455,7 @@ get_thread_statement_locker_v1(PSI_statement_locker_state *state,
       pfs->m_sort_scan= 0;
       pfs->m_no_index_used= 0;
       pfs->m_no_good_index_used= 0;
-      digest_reset(& pfs->m_digest_storage);
+      pfs->m_digest_storage.reset();
 
       /* New stages will have this statement as parent */
       PFS_events_stages *child_stage= & pfs_thread->m_stage_current;
@@ -4484,11 +4484,7 @@ get_thread_statement_locker_v1(PSI_statement_locker_state *state,
 
   if (flag_statements_digest)
   {
-    const CHARSET_INFO *cs= static_cast <const CHARSET_INFO*> (charset);
     flags|= STATE_FLAG_DIGEST;
-    state->m_digest_state.m_last_id_index= 0;
-    digest_reset(& state->m_digest_state.m_digest_storage);
-    state->m_digest_state.m_digest_storage.m_charset_number= cs->number;
   }
 
   state->m_discarded= false;
@@ -4512,6 +4508,8 @@ get_thread_statement_locker_v1(PSI_statement_locker_state *state,
   state->m_no_index_used= 0;
   state->m_no_good_index_used= 0;
 
+  state->m_digest= NULL;
+
   state->m_schema_name_length= 0;
 
   return reinterpret_cast<PSI_statement_locker*> (state);
@@ -4781,11 +4779,11 @@ static void end_statement_v1(PSI_statement_locker *locker, void *stmt_da)
   PFS_statement_stat *event_name_array;
   uint index= klass->m_event_name_index;
   PFS_statement_stat *stat;
-  
+
   /*
    Capture statement stats by digest.
   */
-  PSI_digest_storage *digest_storage= NULL;
+  const sql_digest_storage *digest_storage= NULL;
   PFS_statement_stat *digest_stat= NULL;
 
   if (flags & STATE_FLAG_THREAD)
@@ -4798,11 +4796,15 @@ static void end_statement_v1(PSI_statement_locker *locker, void *stmt_da)
 
     if (flags & STATE_FLAG_DIGEST)
     {
-      digest_storage= &state->m_digest_state.m_digest_storage;
-      /* Populate PFS_statements_digest_stat with computed digest information.*/
-      digest_stat= find_or_create_digest(thread, digest_storage,
-                                         state->m_schema_name,
-                                         state->m_schema_name_length);
+      digest_storage= state->m_digest;
+
+      if (digest_storage != NULL)
+      {
+        /* Populate PFS_statements_digest_stat with computed digest information.*/
+        digest_stat= find_or_create_digest(thread, digest_storage,
+                                           state->m_schema_name,
+                                           state->m_schema_name_length);
+      }
     }
 
     if (flags & STATE_FLAG_EVENT)
@@ -4839,7 +4841,7 @@ static void end_statement_v1(PSI_statement_locker *locker, void *stmt_da)
       pfs->m_timer_end= timer_end;
       pfs->m_end_event_id= thread->m_event_id;
 
-      if (flags & STATE_FLAG_DIGEST)
+      if (digest_storage != NULL)
       {
         /*
           The following columns in events_statement_current:
@@ -4847,7 +4849,7 @@ static void end_statement_v1(PSI_statement_locker *locker, void *stmt_da)
           - DIGEST_TEXT
           are computed from the digest storage.
         */
-        digest_copy(& pfs->m_digest_storage, digest_storage);
+        pfs->m_digest_storage.copy(digest_storage);
       }
 
       if (flag_events_statements_history)
@@ -4870,11 +4872,15 @@ static void end_statement_v1(PSI_statement_locker *locker, void *stmt_da)
       if (thread != NULL)
       {
         /* Set digest stat. */
-        digest_storage= &state->m_digest_state.m_digest_storage;
-        /* Populate statements_digest_stat with computed digest information. */
-        digest_stat= find_or_create_digest(thread, digest_storage,
-                                           state->m_schema_name,
-                                           state->m_schema_name_length);
+        digest_storage= state->m_digest;
+
+        if (digest_storage != NULL)
+        {
+          /* Populate statements_digest_stat with computed digest information. */
+          digest_stat= find_or_create_digest(thread, digest_storage,
+                                             state->m_schema_name,
+                                             state->m_schema_name_length);
+        }
       }
     }
 
@@ -4921,7 +4927,7 @@ static void end_statement_v1(PSI_statement_locker *locker, void *stmt_da)
     {
       digest_stat->aggregate_counted();
     }
-  
+
     digest_stat->m_lock_time+= state->m_lock_time;
     digest_stat->m_rows_sent+= state->m_rows_sent;
     digest_stat->m_rows_examined+= state->m_rows_examined;
@@ -5106,6 +5112,39 @@ static void set_socket_thread_owner_v1(PSI_socket *socket)
   pfs_socket->m_thread_owner= my_pthread_getspecific_ptr(PFS_thread*, THR_PFS);
 }
 
+struct PSI_digest_locker*
+pfs_digest_start_v1(PSI_statement_locker *locker)
+{
+  PSI_statement_locker_state *statement_state;
+  statement_state= reinterpret_cast<PSI_statement_locker_state*> (locker);
+  DBUG_ASSERT(statement_state != NULL);
+
+  if (statement_state->m_discarded)
+    return NULL;
+
+  if (statement_state->m_flags & STATE_FLAG_DIGEST)
+  {
+    return reinterpret_cast<PSI_digest_locker*> (locker);
+  }
+
+  return NULL;
+}
+
+void pfs_digest_end_v1(PSI_digest_locker *locker, const sql_digest_storage *digest)
+{
+  PSI_statement_locker_state *statement_state;
+  statement_state= reinterpret_cast<PSI_statement_locker_state*> (locker);
+  DBUG_ASSERT(statement_state != NULL);
+  DBUG_ASSERT(digest != NULL);
+
+  if (statement_state->m_discarded)
+    return;
+
+  if (statement_state->m_flags & STATE_FLAG_DIGEST)
+  {
+    statement_state->m_digest= digest;
+  }
+}
 
 /**
   Implementation of the thread attribute connection interface
@@ -5243,7 +5282,7 @@ PSI_v1 PFS_v1=
   set_socket_info_v1,
   set_socket_thread_owner_v1,
   pfs_digest_start_v1,
-  pfs_digest_add_token_v1,
+  pfs_digest_end_v1,
   set_thread_connect_attrs_v1,
 };
 
diff --git a/storage/perfschema/pfs_account.cc b/storage/perfschema/pfs_account.cc
index 0e4c6cb1d04..3eff670f44d 100644
--- a/storage/perfschema/pfs_account.cc
+++ b/storage/perfschema/pfs_account.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/storage/perfschema/pfs_column_types.h b/storage/perfschema/pfs_column_types.h
index 23ef946ee82..c70ca220d84 100644
--- a/storage/perfschema/pfs_column_types.h
+++ b/storage/perfschema/pfs_column_types.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/storage/perfschema/pfs_digest.cc b/storage/perfschema/pfs_digest.cc
index c3c52bbd56d..5b61d6a14fe 100644
--- a/storage/perfschema/pfs_digest.cc
+++ b/storage/perfschema/pfs_digest.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -28,54 +28,32 @@
 #include "pfs_digest.h"
 #include "pfs_global.h"
 #include "table_helper.h"
-#include "my_md5.h"
 #include "sql_lex.h"
 #include "sql_get_diagnostics.h"
 #include "sql_string.h"
 #include <string.h>
 
-/* Generated code */
-#include "../sql/sql_yacc.h"
-#include "../storage/perfschema/pfs_lex_token.h"
-
-/* Name pollution from sql/sql_lex.h */
-#ifdef LEX_YYSTYPE
-#undef LEX_YYSTYPE
-#endif
-
-#define LEX_YYSTYPE YYSTYPE
-
-/**
-  Token array :
-  Token array is an array of bytes to store tokens received during parsing.
-  Following is the way token array is formed.
-
-      ...<non-id-token><non-id-token><id-token><id_len><id_text>...
-
-  For Ex:
-  SELECT * FROM T1;
-  <SELECT_TOKEN><*><FROM_TOKEN><ID_TOKEN><2><T1>
-*/
-
 ulong digest_max= 0;
 ulong digest_lost= 0;
 
 /** EVENTS_STATEMENTS_HISTORY_LONG circular buffer. */
 PFS_statements_digest_stat *statements_digest_stat_array= NULL;
+static unsigned char *statements_digest_token_array= NULL;
 /** Consumer flag for table EVENTS_STATEMENTS_SUMMARY_BY_DIGEST. */
 bool flag_statements_digest= true;
 /**
   Current index in Stat array where new record is to be inserted.
   index 0 is reserved for "all else" case when entire array is full.
 */
-volatile uint32 digest_index= 1;
+volatile uint32 digest_index;
+bool digest_full= false;
 
 LF_HASH digest_hash;
 static bool digest_hash_inited= false;
 
 /**
   Initialize table EVENTS_STATEMENTS_SUMMARY_BY_DIGEST.
-  @param digest_sizing
+  @param param performance schema sizing
 */
 int init_digest(const PFS_global_param *param)
 {
@@ -87,19 +65,41 @@ int init_digest(const PFS_global_param *param)
   */
   digest_max= param->m_digest_sizing;
   digest_lost= 0;
+  digest_index= 1;
+  digest_full= false;
 
   if (digest_max == 0)
     return 0;
 
   statements_digest_stat_array=
-    PFS_MALLOC_ARRAY(digest_max, PFS_statements_digest_stat,
+    PFS_MALLOC_ARRAY(digest_max,
+                     PFS_statements_digest_stat,
                      MYF(MY_ZEROFILL));
+
   if (unlikely(statements_digest_stat_array == NULL))
+  {
+    cleanup_digest();
     return 1;
+  }
+
+  if (pfs_max_digest_length > 0)
+  {
+    statements_digest_token_array=
+      PFS_MALLOC_ARRAY(digest_max * pfs_max_digest_length,
+                       unsigned char,
+                       MYF(MY_ZEROFILL));
+
+    if (unlikely(statements_digest_token_array == NULL))
+    {
+      cleanup_digest();
+      return 1;
+    }
+  }
 
   for (index= 0; index < digest_max; index++)
   {
-    statements_digest_stat_array[index].reset_data();
+    statements_digest_stat_array[index].reset_data(statements_digest_token_array
+                                                   + index * pfs_max_digest_length, pfs_max_digest_length);
   }
 
   return 0;
@@ -110,7 +110,9 @@ void cleanup_digest(void)
 {
   /*  Free memory allocated to statements_digest_stat_array. */
   pfs_free(statements_digest_stat_array);
+  pfs_free(statements_digest_token_array);
   statements_digest_stat_array= NULL;
+  statements_digest_token_array= NULL;
 }
 
 C_MODE_START
@@ -170,10 +172,12 @@ static LF_PINS* get_digest_hash_pins(PFS_thread *thread)
 
 PFS_statement_stat*
 find_or_create_digest(PFS_thread *thread,
-                      PSI_digest_storage *digest_storage,
+                      const sql_digest_storage *digest_storage,
                       const char *schema_name,
                       uint schema_name_length)
 {
+  DBUG_ASSERT(digest_storage != NULL);
+
   if (statements_digest_stat_array == NULL)
     return NULL;
 
@@ -192,9 +196,8 @@ find_or_create_digest(PFS_thread *thread,
   PFS_digest_key hash_key;
   memset(& hash_key, 0, sizeof(hash_key));
   /* Compute MD5 Hash of the tokens received. */
-  compute_md5_hash((char *) hash_key.m_md5,
-                   (char *) digest_storage->m_token_array,
-                   digest_storage->m_byte_count);
+  compute_digest_md5(digest_storage, hash_key.m_md5);
+  memcpy((void*)& digest_storage->m_md5, &hash_key.m_md5, MD5_HASH_SIZE);
   /* Add the current schema to the key */
   hash_key.m_schema_name_length= schema_name_length;
   if (schema_name_length > 0)
@@ -227,8 +230,7 @@ search:
 
   lf_hash_search_unpin(pins);
 
-  /* Dirty read of digest_index */
-  if (digest_index == 0)
+  if (digest_full)
   {
     /*  digest_stat array is full. Add stat at index 0 and return. */
     pfs= &statements_digest_stat_array[0];
@@ -244,7 +246,7 @@ search:
   if (safe_index >= digest_max)
   {
     /* The digest array is now full. */
-    digest_index= 0;
+    digest_full= true;
     pfs= &statements_digest_stat_array[0];
 
     if (pfs->m_first_seen == 0)
@@ -263,7 +265,7 @@ search:
     Copy digest storage to statement_digest_stat_array so that it could be
     used later to generate digest text.
   */
-  digest_copy(& pfs->m_digest_storage, digest_storage);
+  pfs->m_digest_storage.copy(digest_storage);
 
   pfs->m_first_seen= now;
   pfs->m_last_seen= now;
@@ -313,9 +315,9 @@ void purge_digest(PFS_thread* thread, PFS_digest_key *hash_key)
   return;
 }
 
-void PFS_statements_digest_stat::reset_data()
+void PFS_statements_digest_stat::reset_data(unsigned char *token_array, uint length)
 {
-  digest_reset(& m_digest_storage);
+  m_digest_storage.reset(token_array, length);
   m_stat.reset();
   m_first_seen= 0;
   m_last_seen= 0;
@@ -345,7 +347,7 @@ void reset_esms_by_digest()
   for (index= 0; index < digest_max; index++)
   {
     statements_digest_stat_array[index].reset_index(thread);
-    statements_digest_stat_array[index].reset_data();
+    statements_digest_stat_array[index].reset_data(statements_digest_token_array + index * pfs_max_digest_length, pfs_max_digest_length);
   }
 
   /*
@@ -353,448 +355,6 @@ void reset_esms_by_digest()
     to be inserted in statements_digest_stat_array.
   */
   digest_index= 1;
+  digest_full= false;
 }
 
-/*
-  Iterate token array and updates digest_text.
-*/
-void get_digest_text(char* digest_text, PSI_digest_storage* digest_storage)
-{
-  DBUG_ASSERT(digest_storage != NULL);
-  bool truncated= false;
-  int byte_count= digest_storage->m_byte_count;
-  char *digest_output= digest_text;
-  int bytes_needed= 0;
-  uint tok= 0;
-  int current_byte= 0;
-  lex_token_string *tok_data;
-  /* -4 is to make sure extra space for '...' and a '\0' at the end. */
-  int bytes_available= COL_DIGEST_TEXT_SIZE - 4;
-
-  if (byte_count <= 0 || byte_count > PSI_MAX_DIGEST_STORAGE_SIZE)
-  {
-    *digest_text= '\0';
-    return;
-  }
-
-  /* Convert text to utf8 */
-  const CHARSET_INFO *from_cs= get_charset(digest_storage->m_charset_number, MYF(0));
-  const CHARSET_INFO *to_cs= &my_charset_utf8_bin;
-
-  if (from_cs == NULL)
-  {
-    /*
-      Can happen, as we do dirty reads on digest_storage,
-      which can be written to in another thread.
-    */
-    *digest_text= '\0';
-    return;
-  }
-
-  /*
-     Max converted size is number of characters * max multibyte length of the
-     target charset, which is 4 for UTF8.
-   */
-  const uint max_converted_size= PSI_MAX_DIGEST_STORAGE_SIZE * 4;
-  char id_buffer[max_converted_size];
-  char *id_string;
-  int  id_length;
-  bool convert_text= !my_charset_same(from_cs, to_cs);
-
-  DBUG_ASSERT(byte_count <= PSI_MAX_DIGEST_STORAGE_SIZE);
-
-  while ((current_byte < byte_count) &&
-         (bytes_available > 0) &&
-         !truncated)
-  {
-    current_byte= read_token(digest_storage, current_byte, &tok);
-
-    if (tok <= 0 || tok >= array_elements(lex_token_array))
-    {
-      *digest_text='\0';
-      return;
-    }
-
-    tok_data= &lex_token_array[tok];
-
-    switch (tok)
-    {
-    /* All identifiers are printed with their name. */
-    case IDENT:
-    case IDENT_QUOTED:
-      {
-        char *id_ptr;
-        int id_len;
-        uint err_cs= 0;
-
-        /* Get the next identifier from the storage buffer. */
-        current_byte= read_identifier(digest_storage, current_byte,
-                                      &id_ptr, &id_len);
-        if (convert_text)
-        {
-          /* Verify that the converted text will fit. */
-          if (to_cs->mbmaxlen*id_len > max_converted_size)
-          {
-            truncated= true;
-            break;
-          }
-          /* Convert identifier string into the storage character set. */
-          id_length= my_convert(id_buffer, max_converted_size, to_cs,
-                                id_ptr, id_len, from_cs, &err_cs);
-          id_string= id_buffer;
-        }
-        else
-        {
-          id_string= id_ptr;
-          id_length= id_len;
-        }
-
-        if (id_length == 0 || err_cs != 0)
-        {
-          truncated= true;
-          break;
-        }
-        /* Copy the converted identifier into the digest string. */
-        bytes_needed= id_length + (tok == IDENT ? 1 : 3);
-        if (bytes_needed <= bytes_available)
-        {
-          if (tok == IDENT_QUOTED)
-            *digest_output++= '`';
-          if (id_length > 0)
-          {
-            memcpy(digest_output, id_string, id_length);
-            digest_output+= id_length;
-          }
-          if (tok == IDENT_QUOTED)
-            *digest_output++= '`';
-          *digest_output++= ' ';
-          bytes_available-= bytes_needed;
-        }
-        else
-        {
-          truncated= true;
-        }
-      }
-      break;
-
-    /* Everything else is printed as is. */
-    default:
-      /*
-        Make sure not to overflow digest_text buffer.
-        +1 is to make sure extra space for ' '.
-      */
-      int tok_length= tok_data->m_token_length;
-      bytes_needed= tok_length + 1;
-
-      if (bytes_needed <= bytes_available)
-      {
-        strncpy(digest_output, tok_data->m_token_string, tok_length);
-        digest_output+= tok_length;
-        *digest_output++= ' ';
-        bytes_available-= bytes_needed;
-      }
-      else
-      {
-        truncated= true;
-      }
-      break;
-    }
-  }
-
-  /* Truncate digest text in case of long queries. */
-  if (digest_storage->m_full || truncated)
-  {
-    strcpy(digest_output, "...");
-    digest_output+= 3;
-  }
-
-  *digest_output= '\0';
-}
-
-static inline uint peek_token(const PSI_digest_storage *digest, int index)
-{
-  uint token;
-  DBUG_ASSERT(index >= 0);
-  DBUG_ASSERT(index + PFS_SIZE_OF_A_TOKEN <= digest->m_byte_count);
-  DBUG_ASSERT(digest->m_byte_count <=  PSI_MAX_DIGEST_STORAGE_SIZE);
-
-  token= ((digest->m_token_array[index + 1])<<8) | digest->m_token_array[index];
-  return token;
-}
-
-/**
-  Function to read last two tokens from token array. If an identifier
-  is found, do not look for token before that.
-*/
-static inline void peek_last_two_tokens(const PSI_digest_storage* digest_storage,
-                                        int last_id_index, uint *t1, uint *t2)
-{
-  int byte_count= digest_storage->m_byte_count;
-  int peek_index= byte_count - PFS_SIZE_OF_A_TOKEN;
-
-  if (last_id_index <= peek_index)
-  {
-    /* Take last token. */
-    *t1= peek_token(digest_storage, peek_index);
-
-    peek_index-= PFS_SIZE_OF_A_TOKEN;
-    if (last_id_index <= peek_index)
-    {
-      /* Take 2nd token from last. */
-      *t2= peek_token(digest_storage, peek_index);
-    }
-    else
-    {
-      *t2= TOK_PFS_UNUSED;
-    }
-  }
-  else
-  {
-    *t1= TOK_PFS_UNUSED;
-    *t2= TOK_PFS_UNUSED;
-  }
-}
-
-struct PSI_digest_locker* pfs_digest_start_v1(PSI_statement_locker *locker)
-{
-  PSI_statement_locker_state *statement_state;
-  statement_state= reinterpret_cast<PSI_statement_locker_state*> (locker);
-  DBUG_ASSERT(statement_state != NULL);
-
-  if (statement_state->m_discarded)
-    return NULL;
-
-  if (statement_state->m_flags & STATE_FLAG_DIGEST)
-  {
-    PSI_digest_locker_state *digest_state;
-    digest_state= &statement_state->m_digest_state;
-    return reinterpret_cast<PSI_digest_locker*> (digest_state);
-  }
-
-  return NULL;
-}
-
-PSI_digest_locker* pfs_digest_add_token_v1(PSI_digest_locker *locker,
-                                           uint token,
-                                           OPAQUE_LEX_YYSTYPE *yylval)
-{
-  PSI_digest_locker_state *state= NULL;
-  PSI_digest_storage      *digest_storage= NULL;
-
-  state= reinterpret_cast<PSI_digest_locker_state*> (locker);
-  DBUG_ASSERT(state != NULL);
-
-  digest_storage= &state->m_digest_storage;
-
-  /*
-    Stop collecting further tokens if digest storage is full or
-    if END token is received.
-  */
-  if (digest_storage->m_full || token == END_OF_INPUT)
-    return NULL;
-
-  /*
-    Take last_token 2 tokens collected till now. These tokens will be used
-    in reduce for normalisation. Make sure not to consider ID tokens in reduce.
-  */
-  uint last_token;
-  uint last_token2;
-
-  switch (token)
-  {
-    case NUM:
-    case LONG_NUM:
-    case ULONGLONG_NUM:
-    case DECIMAL_NUM:
-    case FLOAT_NUM:
-    case BIN_NUM:
-    case HEX_NUM:
-    {
-      bool found_unary;
-      do
-      {
-        found_unary= false;
-        peek_last_two_tokens(digest_storage, state->m_last_id_index,
-                             &last_token, &last_token2);
-
-        if ((last_token == '-') || (last_token == '+'))
-        {
-          /*
-            We need to differentiate:
-            - a <unary minus> operator
-            - a <unary plus> operator
-            from
-            - a <binary minus> operator
-            - a <binary plus> operator
-            to only reduce "a = -1" to "a = ?", and not change "b - 1" to "b ?"
-
-            Binary operators are found inside an expression,
-            while unary operators are found at the beginning of an expression, or after operators.
-
-            To achieve this, every token that is followed by an <expr> expression
-            in the SQL grammar is flagged.
-            See sql/sql_yacc.yy
-            See sql/gen_lex_token.cc
-
-            For example,
-            "(-1)" is parsed as "(", "-", NUM, ")", and lex_token_array["("].m_start_expr is true,
-            so reduction of the "-" NUM is done, the result is "(?)".
-            "(a-1)" is parsed as "(", ID, "-", NUM, ")", and lex_token_array[ID].m_start_expr is false,
-            so the operator is binary, no reduction is done, and the result is "(a-?)".
-          */
-          if (lex_token_array[last_token2].m_start_expr)
-          {
-            /*
-              REDUCE:
-              TOK_PFS_GENERIC_VALUE := (UNARY_PLUS | UNARY_MINUS) (NUM | LOG_NUM | ... | FLOAT_NUM)
-
-              REDUCE:
-              TOK_PFS_GENERIC_VALUE := (UNARY_PLUS | UNARY_MINUS) TOK_PFS_GENERIC_VALUE
-            */
-            token= TOK_PFS_GENERIC_VALUE;
-            digest_storage->m_byte_count-= PFS_SIZE_OF_A_TOKEN;
-            found_unary= true;
-          }
-        }
-      } while (found_unary);
-    }
-    /* fall through, for case NULL_SYM below */
-    case LEX_HOSTNAME:
-    case TEXT_STRING:
-    case NCHAR_STRING:
-    case PARAM_MARKER:
-    {
-      /*
-        REDUCE:
-        TOK_PFS_GENERIC_VALUE := BIN_NUM | DECIMAL_NUM | ... | ULONGLONG_NUM
-      */
-      token= TOK_PFS_GENERIC_VALUE;
-    }
-    /* fall through */
-    case NULL_SYM:
-    {
-      peek_last_two_tokens(digest_storage, state->m_last_id_index,
-                           &last_token, &last_token2);
-
-      if ((last_token2 == TOK_PFS_GENERIC_VALUE ||
-           last_token2 == TOK_PFS_GENERIC_VALUE_LIST ||
-           last_token2 == NULL_SYM) &&
-          (last_token == ','))
-      {
-        /*
-          REDUCE:
-          TOK_PFS_GENERIC_VALUE_LIST :=
-            (TOK_PFS_GENERIC_VALUE|NULL_SYM) ',' (TOK_PFS_GENERIC_VALUE|NULL_SYM)
-
-          REDUCE:
-          TOK_PFS_GENERIC_VALUE_LIST :=
-            TOK_PFS_GENERIC_VALUE_LIST ',' (TOK_PFS_GENERIC_VALUE|NULL_SYM)
-        */
-        digest_storage->m_byte_count-= 2*PFS_SIZE_OF_A_TOKEN;
-        token= TOK_PFS_GENERIC_VALUE_LIST;
-      }
-      /*
-        Add this token or the resulting reduce to digest storage.
-      */
-      store_token(digest_storage, token);
-      break;
-    }
-    case ')':
-    {
-      peek_last_two_tokens(digest_storage, state->m_last_id_index,
-                           &last_token, &last_token2);
-
-      if (last_token == TOK_PFS_GENERIC_VALUE &&
-          last_token2 == '(')
-      {
-        /*
-          REDUCE:
-          TOK_PFS_ROW_SINGLE_VALUE :=
-            '(' TOK_PFS_GENERIC_VALUE ')'
-        */
-        digest_storage->m_byte_count-= 2*PFS_SIZE_OF_A_TOKEN;
-        token= TOK_PFS_ROW_SINGLE_VALUE;
-
-        /* Read last two tokens again */
-        peek_last_two_tokens(digest_storage, state->m_last_id_index,
-                             &last_token, &last_token2);
-
-        if ((last_token2 == TOK_PFS_ROW_SINGLE_VALUE ||
-             last_token2 == TOK_PFS_ROW_SINGLE_VALUE_LIST) &&
-            (last_token == ','))
-        {
-          /*
-            REDUCE:
-            TOK_PFS_ROW_SINGLE_VALUE_LIST :=
-              TOK_PFS_ROW_SINGLE_VALUE ',' TOK_PFS_ROW_SINGLE_VALUE
-
-            REDUCE:
-            TOK_PFS_ROW_SINGLE_VALUE_LIST :=
-              TOK_PFS_ROW_SINGLE_VALUE_LIST ',' TOK_PFS_ROW_SINGLE_VALUE
-          */
-          digest_storage->m_byte_count-= 2*PFS_SIZE_OF_A_TOKEN;
-          token= TOK_PFS_ROW_SINGLE_VALUE_LIST;
-        }
-      }
-      else if (last_token == TOK_PFS_GENERIC_VALUE_LIST &&
-               last_token2 == '(')
-      {
-        /*
-          REDUCE:
-          TOK_PFS_ROW_MULTIPLE_VALUE :=
-            '(' TOK_PFS_GENERIC_VALUE_LIST ')'
-        */
-        digest_storage->m_byte_count-= 2*PFS_SIZE_OF_A_TOKEN;
-        token= TOK_PFS_ROW_MULTIPLE_VALUE;
-
-        /* Read last two tokens again */
-        peek_last_two_tokens(digest_storage, state->m_last_id_index,
-                             &last_token, &last_token2);
-
-        if ((last_token2 == TOK_PFS_ROW_MULTIPLE_VALUE ||
-             last_token2 == TOK_PFS_ROW_MULTIPLE_VALUE_LIST) &&
-            (last_token == ','))
-        {
-          /*
-            REDUCE:
-            TOK_PFS_ROW_MULTIPLE_VALUE_LIST :=
-              TOK_PFS_ROW_MULTIPLE_VALUE ',' TOK_PFS_ROW_MULTIPLE_VALUE
-
-            REDUCE:
-            TOK_PFS_ROW_MULTIPLE_VALUE_LIST :=
-              TOK_PFS_ROW_MULTIPLE_VALUE_LIST ',' TOK_PFS_ROW_MULTIPLE_VALUE
-          */
-          digest_storage->m_byte_count-= 2*PFS_SIZE_OF_A_TOKEN;
-          token= TOK_PFS_ROW_MULTIPLE_VALUE_LIST;
-        }
-      }
-      /*
-        Add this token or the resulting reduce to digest storage.
-      */
-      store_token(digest_storage, token);
-      break;
-    }
-    case IDENT:
-    case IDENT_QUOTED:
-    {
-      LEX_YYSTYPE *lex_token= (LEX_YYSTYPE*) yylval;
-      char *yytext= lex_token->lex_str.str;
-      int yylen= lex_token->lex_str.length;
-
-      /* Add this token and identifier string to digest storage. */
-      store_token_identifier(digest_storage, token, yylen, yytext);
-
-      /* Update the index of last identifier found. */
-      state->m_last_id_index= digest_storage->m_byte_count;
-      break;
-    }
-    default:
-    {
-      /* Add this token to digest storage. */
-      store_token(digest_storage, token);
-      break;
-    }
-  }
-
-  return locker;
-}
diff --git a/storage/perfschema/pfs_digest.h b/storage/perfschema/pfs_digest.h
index 03f534b3d7e..9d021737c44 100644
--- a/storage/perfschema/pfs_digest.h
+++ b/storage/perfschema/pfs_digest.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -24,23 +24,19 @@
 #include "pfs_column_types.h"
 #include "lf.h"
 #include "pfs_stat.h"
-
-#define PFS_SIZE_OF_A_TOKEN 2
+#include "sql_digest.h"
 
 extern bool flag_statements_digest;
 extern ulong digest_max;
 extern ulong digest_lost;
 struct PFS_thread;
 
-/* Fixed, per MD5 hash. */
-#define PFS_MD5_SIZE 16
-
 /**
   Structure to store a MD5 hash value (digest) for a statement.
 */
 struct PFS_digest_key
 {
-  unsigned char m_md5[PFS_MD5_SIZE];
+  unsigned char m_md5[MD5_HASH_SIZE];
   char m_schema_name[NAME_LEN];
   uint m_schema_name_length;
 };
@@ -52,7 +48,7 @@ struct PFS_ALIGNED PFS_statements_digest_stat
   PFS_digest_key m_digest_key;
 
   /** Digest Storage. */
-  PSI_digest_storage m_digest_storage;
+  sql_digest_storage m_digest_storage;
 
   /** Statement stat. */
   PFS_statement_stat m_stat;
@@ -62,7 +58,7 @@ struct PFS_ALIGNED PFS_statements_digest_stat
   ulonglong m_last_seen;
 
   /** Reset data for this record. */
-  void reset_data();
+  void reset_data(unsigned char* token_array, uint length);
   /** Reset data and remove index for this record. */
   void reset_index(PFS_thread *thread);
 };
@@ -73,147 +69,15 @@ void cleanup_digest();
 int init_digest_hash(void);
 void cleanup_digest_hash(void);
 PFS_statement_stat* find_or_create_digest(PFS_thread *thread,
-                                          PSI_digest_storage *digest_storage,
+                                          const sql_digest_storage *digest_storage,
                                           const char *schema_name,
                                           uint schema_name_length);
 
-void get_digest_text(char *digest_text, PSI_digest_storage *digest_storage);
-
 void reset_esms_by_digest();
 
 /* Exposing the data directly, for iterators. */
 extern PFS_statements_digest_stat *statements_digest_stat_array;
 
-/* Instrumentation callbacks for pfs.cc */
-
-struct PSI_digest_locker *pfs_digest_start_v1(PSI_statement_locker *locker);
-PSI_digest_locker *pfs_digest_add_token_v1(PSI_digest_locker *locker,
-                                           uint token,
-                                           OPAQUE_LEX_YYSTYPE *yylval);
-
-static inline void digest_reset(PSI_digest_storage *digest)
-{
-  digest->m_full= false;
-  digest->m_byte_count= 0;
-  digest->m_charset_number= 0;
-}
-
-static inline void digest_copy(PSI_digest_storage *to, const PSI_digest_storage *from)
-{
-  if (from->m_byte_count > 0)
-  {
-    to->m_full= from->m_full;
-    to->m_byte_count= from->m_byte_count;
-    to->m_charset_number= from->m_charset_number;
-    DBUG_ASSERT(to->m_byte_count <= PSI_MAX_DIGEST_STORAGE_SIZE);
-    memcpy(to->m_token_array, from->m_token_array, to->m_byte_count);
-  }
-  else
-  {
-    DBUG_ASSERT(from->m_byte_count == 0);
-    to->m_full= false;
-    to->m_byte_count= 0;
-    to->m_charset_number= 0;
-  }
-}
-
-/** 
-  Read a single token from token array.
-*/
-inline int read_token(PSI_digest_storage *digest_storage,
-                      int index, uint *tok)
-{
-  int safe_byte_count= digest_storage->m_byte_count;
-
-  if (index + PFS_SIZE_OF_A_TOKEN <= safe_byte_count &&
-      safe_byte_count <= PSI_MAX_DIGEST_STORAGE_SIZE)
-  {
-    unsigned char *src= & digest_storage->m_token_array[index];
-    *tok= src[0] | (src[1] << 8);
-    return index + PFS_SIZE_OF_A_TOKEN;
-  }
-
-  /* The input byte stream is exhausted. */
-  *tok= 0;
-  return PSI_MAX_DIGEST_STORAGE_SIZE + 1;
-}
-
-/**
-  Store a single token in token array.
-*/
-inline void store_token(PSI_digest_storage* digest_storage, uint token)
-{
-  DBUG_ASSERT(digest_storage->m_byte_count >= 0);
-  DBUG_ASSERT(digest_storage->m_byte_count <= PSI_MAX_DIGEST_STORAGE_SIZE);
-
-  if (digest_storage->m_byte_count + PFS_SIZE_OF_A_TOKEN <= PSI_MAX_DIGEST_STORAGE_SIZE)
-  {
-    unsigned char* dest= & digest_storage->m_token_array[digest_storage->m_byte_count];
-    dest[0]= token & 0xff;
-    dest[1]= (token >> 8) & 0xff;
-    digest_storage->m_byte_count+= PFS_SIZE_OF_A_TOKEN; 
-  }
-  else
-  {
-    digest_storage->m_full= true;
-  }
-}
-
-/**
-  Read an identifier from token array.
-*/
-inline int read_identifier(PSI_digest_storage* digest_storage,
-                           int index, char ** id_string, int *id_length)
-{
-  int new_index;
-  DBUG_ASSERT(index <= digest_storage->m_byte_count);
-  DBUG_ASSERT(digest_storage->m_byte_count <= PSI_MAX_DIGEST_STORAGE_SIZE);
-
-  /*
-    token + length + string are written in an atomic way,
-    so we do always expect a length + string here
-  */
-  unsigned char *src= & digest_storage->m_token_array[index];
-  uint length= src[0] | (src[1] << 8);
-  *id_string= (char *) (src + 2);
-  *id_length= length;
-
-  new_index= index + PFS_SIZE_OF_A_TOKEN + length;
-  DBUG_ASSERT(new_index <= digest_storage->m_byte_count);
-  return new_index;
-}
-
-/**
-  Store an identifier in token array.
-*/
-inline void store_token_identifier(PSI_digest_storage* digest_storage,
-                                   uint token,
-                                   uint id_length, const char *id_name)
-{
-  DBUG_ASSERT(digest_storage->m_byte_count >= 0);
-  DBUG_ASSERT(digest_storage->m_byte_count <= PSI_MAX_DIGEST_STORAGE_SIZE);
-
-  uint bytes_needed= 2 * PFS_SIZE_OF_A_TOKEN + id_length;
-  if (digest_storage->m_byte_count + bytes_needed <= PSI_MAX_DIGEST_STORAGE_SIZE)
-  {
-    unsigned char* dest= & digest_storage->m_token_array[digest_storage->m_byte_count];
-    /* Write the token */
-    dest[0]= token & 0xff;
-    dest[1]= (token >> 8) & 0xff;
-    /* Write the string length */
-    dest[2]= id_length & 0xff;
-    dest[3]= (id_length >> 8) & 0xff;
-    /* Write the string data */
-    if (id_length > 0)
-      memcpy((char *)(dest + 4), id_name, id_length);
-    digest_storage->m_byte_count+= bytes_needed; 
-  }
-  else
-  {
-    digest_storage->m_full= true;
-  }
-}
-
 extern LF_HASH digest_hash;
 
 #endif
diff --git a/storage/perfschema/pfs_engine_table.cc b/storage/perfschema/pfs_engine_table.cc
index 958a2bdd7bd..5484f0b4e4c 100644
--- a/storage/perfschema/pfs_engine_table.cc
+++ b/storage/perfschema/pfs_engine_table.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -1412,12 +1412,64 @@ bool pfs_show_status(handlerton *hton, THD *thd,
       name= "host_cache.size";
       size= sizeof(Host_entry);
       break;
+    case 154:
+      name= "(history_long_statements_digest_token_array).row_count";
+      size= events_statements_history_long_size;
+      break;
+    case 155:
+      name= "(history_long_statements_digest_token_array).row_size";
+      size= pfs_max_digest_length;
+      break;
+    case 156:
+      name= "(history_long_statements_digest_token_array).memory";
+      size= events_statements_history_long_size * pfs_max_digest_length;
+      total_memory+= size;
+      break;
+    case 157:
+      name= "(history_statements_digest_token_array).row_count";
+      size= thread_max * events_statements_history_per_thread;
+      break;
+    case 158:
+      name= "(history_statements_digest_token_array).row_size";
+      size= pfs_max_digest_length;
+      break;
+    case 159:
+      name= "(history_statements_digest_token_array).memory";
+      size= thread_max * events_statements_history_per_thread * pfs_max_digest_length;
+      total_memory+= size;
+      break;
+    case 160:
+      name= "(current_statements_digest_token_array).row_count";
+      size= thread_max * statement_stack_max;
+      break;
+    case 161:
+      name= "(current_statements_digest_token_array).row_size";
+      size= pfs_max_digest_length;
+      break;
+    case 162:
+      name= "(current_statements_digest_token_array).memory";
+      size= thread_max * statement_stack_max * pfs_max_digest_length;
+      total_memory+= size;
+      break;
+    case 163:
+      name= "(statements_digest_token_array).row_count";
+      size= digest_max;
+      break;
+    case 164:
+      name= "(statements_digest_token_array).row_size";
+      size= pfs_max_digest_length;
+      break;
+    case 165:
+      name= "(statements_digest_token_array).memory";
+      size= digest_max * pfs_max_digest_length;
+      total_memory+= size;
+      break;
 
     /*
       This case must be last,
       for aggregation in total_memory.
     */
-    case 154:
+    case 166:
       name= "performance_schema.memory";
       size= total_memory;
       /* This will fail if something is not advertised here */
diff --git a/storage/perfschema/pfs_events_statements.cc b/storage/perfschema/pfs_events_statements.cc
index 07810d26dc4..dc34755d747 100644
--- a/storage/perfschema/pfs_events_statements.cc
+++ b/storage/perfschema/pfs_events_statements.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -44,6 +44,7 @@ bool events_statements_history_long_full= false;
 volatile uint32 events_statements_history_long_index= 0;
 /** EVENTS_STATEMENTS_HISTORY_LONG circular buffer. */
 PFS_events_statements *events_statements_history_long_array= NULL;
+static unsigned char *h_long_stmts_digest_token_array= NULL;
 
 /**
   Initialize table EVENTS_STATEMENTS_HISTORY_LONG.
@@ -51,6 +52,7 @@ PFS_events_statements *events_statements_history_long_array= NULL;
 */
 int init_events_statements_history_long(uint events_statements_history_long_sizing)
 {
+  uint index;
   events_statements_history_long_size= events_statements_history_long_sizing;
   events_statements_history_long_full= false;
   PFS_atomic::store_u32(&events_statements_history_long_index, 0);
@@ -62,20 +64,50 @@ int init_events_statements_history_long(uint events_statements_history_long_sizi
     PFS_MALLOC_ARRAY(events_statements_history_long_size, PFS_events_statements,
                      MYF(MY_ZEROFILL));
 
-  return (events_statements_history_long_array ? 0 : 1);
+  if (events_statements_history_long_array == NULL)
+  {
+    cleanup_events_statements_history_long();
+    return 1;
+  }
+
+  if (pfs_max_digest_length > 0)
+  {
+    h_long_stmts_digest_token_array=
+      PFS_MALLOC_ARRAY(events_statements_history_long_size * pfs_max_digest_length,
+                       unsigned char, MYF(MY_ZEROFILL));
+    if (h_long_stmts_digest_token_array == NULL)
+    {
+      cleanup_events_statements_history_long();
+      return 1;
+    }
+  }
+
+  for (index= 0; index < events_statements_history_long_size; index++)
+  {
+    events_statements_history_long_array[index].m_digest_storage.reset(h_long_stmts_digest_token_array
+                                                                       + index * pfs_max_digest_length, pfs_max_digest_length);
+  }
+
+  return 0;
 }
 
 /** Cleanup table EVENTS_STATEMENTS_HISTORY_LONG. */
 void cleanup_events_statements_history_long(void)
 {
   pfs_free(events_statements_history_long_array);
+  pfs_free(h_long_stmts_digest_token_array);
   events_statements_history_long_array= NULL;
+  h_long_stmts_digest_token_array= NULL;
 }
 
 static inline void copy_events_statements(PFS_events_statements *dest,
                                       const PFS_events_statements *source)
 {
-  memcpy(dest, source, sizeof(PFS_events_statements));
+  /* Copy all attributes except DIGEST */
+  memcpy(dest, source, my_offsetof(PFS_events_statements, m_digest_storage));
+
+  /* Copy DIGEST */
+  dest->m_digest_storage.copy(& source->m_digest_storage);
 }
 
 /**
diff --git a/storage/perfschema/pfs_events_statements.h b/storage/perfschema/pfs_events_statements.h
index 5d90250c618..3637e4ca764 100644
--- a/storage/perfschema/pfs_events_statements.h
+++ b/storage/perfschema/pfs_events_statements.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -88,8 +88,12 @@ struct PFS_events_statements : public PFS_events
   ulonglong m_no_index_used;
   /** Optimizer metric, number of 'no good index used'. */
   ulonglong m_no_good_index_used;
-  /** Statement digest. */
-  PSI_digest_storage m_digest_storage;
+  /**
+    Statement digest.
+    This underlying token array storage pointer is immutable,
+    and always point to pre allocated memory.
+  */
+  sql_digest_storage m_digest_storage;
 };
 
 void insert_events_statements_history(PFS_thread *thread, PFS_events_statements *statement);
diff --git a/storage/perfschema/pfs_host.cc b/storage/perfschema/pfs_host.cc
index 08f49f091a8..80f3900275d 100644
--- a/storage/perfschema/pfs_host.cc
+++ b/storage/perfschema/pfs_host.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/storage/perfschema/pfs_instr.cc b/storage/perfschema/pfs_instr.cc
index cfae076536c..5e75df4a16f 100644
--- a/storage/perfschema/pfs_instr.cc
+++ b/storage/perfschema/pfs_instr.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -94,6 +94,7 @@ ulong events_stages_history_per_thread;
 /** Number of EVENTS_STATEMENTS_HISTORY records per thread. */
 ulong events_statements_history_per_thread;
 uint statement_stack_max;
+uint pfs_max_digest_length= 0;
 /** Number of locker lost. @sa LOCKER_STACK_SIZE. */
 ulong locker_lost= 0;
 /** Number of statement lost. @sa STATEMENT_STACK_SIZE. */
@@ -176,6 +177,8 @@ static PFS_events_waits *thread_waits_history_array= NULL;
 static PFS_events_stages *thread_stages_history_array= NULL;
 static PFS_events_statements *thread_statements_history_array= NULL;
 static PFS_events_statements *thread_statements_stack_array= NULL;
+static unsigned char *current_stmts_digest_token_array= NULL;
+static unsigned char *history_stmts_digest_token_array= NULL;
 static char *thread_session_connect_attrs_array= NULL;
 
 /** Hash table for instrumented files. */
@@ -190,6 +193,9 @@ static bool filename_hash_inited= false;
 */
 int init_instruments(const PFS_global_param *param)
 {
+  PFS_events_statements *pfs_stmt;
+  unsigned char *pfs_tokens;
+
   uint thread_waits_history_sizing;
   uint thread_stages_history_sizing;
   uint thread_statements_history_sizing;
@@ -215,6 +221,9 @@ int init_instruments(const PFS_global_param *param)
   file_handle_max= param->m_file_handle_sizing;
   file_handle_full= false;
   file_handle_lost= 0;
+
+  pfs_max_digest_length= param->m_max_digest_length;
+
   table_max= param->m_table_sizing;
   table_full= false;
   table_lost= 0;
@@ -254,6 +263,9 @@ int init_instruments(const PFS_global_param *param)
     * session_connect_attrs_size_per_thread;
   session_connect_attrs_lost= 0;
 
+  size_t current_digest_tokens_sizing= param->m_thread_sizing * pfs_max_digest_length * statement_stack_max;
+  size_t history_digest_tokens_sizing= param->m_thread_sizing * pfs_max_digest_length * events_statements_history_per_thread;
+
   mutex_array= NULL;
   rwlock_array= NULL;
   cond_array= NULL;
@@ -266,6 +278,8 @@ int init_instruments(const PFS_global_param *param)
   thread_stages_history_array= NULL;
   thread_statements_history_array= NULL;
   thread_statements_stack_array= NULL;
+  current_stmts_digest_token_array= NULL;
+  history_stmts_digest_token_array= NULL;
   thread_instr_class_waits_array= NULL;
   thread_instr_class_stages_array= NULL;
   thread_instr_class_statements_array= NULL;
@@ -407,6 +421,22 @@ int init_instruments(const PFS_global_param *param)
       return 1;
   }
 
+  if (current_digest_tokens_sizing > 0)
+  {
+    current_stmts_digest_token_array=
+      (unsigned char *)pfs_malloc(current_digest_tokens_sizing, MYF(MY_ZEROFILL));
+    if (unlikely(current_stmts_digest_token_array == NULL))
+      return 1;
+  }
+
+  if (history_digest_tokens_sizing > 0)
+  {
+    history_stmts_digest_token_array=
+      (unsigned char *)pfs_malloc(history_digest_tokens_sizing, MYF(MY_ZEROFILL));
+    if (unlikely(history_stmts_digest_token_array == NULL))
+      return 1;
+  }
+
   for (index= 0; index < thread_max; index++)
   {
     thread_array[index].m_waits_history=
@@ -427,6 +457,22 @@ int init_instruments(const PFS_global_param *param)
       &thread_session_connect_attrs_array[index * session_connect_attrs_size_per_thread];
   }
 
+  for (index= 0; index < thread_statements_stack_sizing; index++)
+  {
+    pfs_stmt= & thread_statements_stack_array[index];
+
+    pfs_tokens= & current_stmts_digest_token_array[index * pfs_max_digest_length];
+    pfs_stmt->m_digest_storage.reset(pfs_tokens, pfs_max_digest_length);
+  }
+
+  for (index= 0; index < thread_statements_history_sizing; index++)
+  {
+    pfs_stmt= & thread_statements_history_array[index];
+
+    pfs_tokens= & history_stmts_digest_token_array[index * pfs_max_digest_length];
+    pfs_stmt->m_digest_storage.reset(pfs_tokens, pfs_max_digest_length);
+  }
+
   if (stage_class_max > 0)
   {
     global_instr_class_stages_array=
@@ -501,6 +547,10 @@ void cleanup_instruments(void)
   thread_instr_class_stages_array= NULL;
   pfs_free(thread_session_connect_attrs_array);
   thread_session_connect_attrs_array=NULL;
+  pfs_free(current_stmts_digest_token_array);
+  current_stmts_digest_token_array= NULL;
+  pfs_free(history_stmts_digest_token_array);
+  history_stmts_digest_token_array= NULL;
 }
 
 C_MODE_START
diff --git a/storage/perfschema/pfs_instr.h b/storage/perfschema/pfs_instr.h
index bd2fe0e4afd..a639f94fada 100644
--- a/storage/perfschema/pfs_instr.h
+++ b/storage/perfschema/pfs_instr.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -298,6 +298,8 @@ struct PFS_ALIGNED PFS_socket : public PFS_instr
 
 /** Max size of the statements stack. */
 extern uint statement_stack_max;
+/** Max size of the digests token array. */
+extern uint pfs_max_digest_length;
 
 /**
   @def PFS_MAX_ALLOC_RETRY
diff --git a/storage/perfschema/pfs_server.cc b/storage/perfschema/pfs_server.cc
index 383a46785fb..1cf60766cf7 100644
--- a/storage/perfschema/pfs_server.cc
+++ b/storage/perfschema/pfs_server.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/storage/perfschema/pfs_server.h b/storage/perfschema/pfs_server.h
index 606a814c168..6f07e5b3feb 100644
--- a/storage/perfschema/pfs_server.h
+++ b/storage/perfschema/pfs_server.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -200,6 +200,8 @@ struct PFS_global_param
   /** Maximum number of session attribute strings per thread */
   long m_session_connect_attrs_sizing;
 
+  uint m_max_digest_length;
+
   /** Sizing hints, for auto tuning. */
   PFS_sizing_hints m_hints;
 };
diff --git a/storage/perfschema/pfs_user.cc b/storage/perfschema/pfs_user.cc
index 905c0b2ee4e..a009e5d65ef 100644
--- a/storage/perfschema/pfs_user.cc
+++ b/storage/perfschema/pfs_user.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/storage/perfschema/table_events_statements.cc b/storage/perfschema/table_events_statements.cc
index a3f2680c3e7..7d7539b7790 100644
--- a/storage/perfschema/table_events_statements.cc
+++ b/storage/perfschema/table_events_statements.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -302,7 +302,7 @@ table_events_statements_common::table_events_statements_common
   @param statement                      the statement the cursor is reading
 */
 void table_events_statements_common::make_row_part_1(PFS_events_statements *statement,
-                                                     PSI_digest_storage *digest)
+                                                     sql_digest_storage *digest)
 {
   const char *base;
   const char *safe_source_file;
@@ -367,46 +367,40 @@ void table_events_statements_common::make_row_part_1(PFS_events_statements *stat
   m_row.m_sort_scan= statement->m_sort_scan;
   m_row.m_no_index_used= statement->m_no_index_used;
   m_row.m_no_good_index_used= statement->m_no_good_index_used;
-  /* 
+  /*
     Making a copy of digest storage.
   */
-  digest_copy(digest, & statement->m_digest_storage);
+  digest->copy(& statement->m_digest_storage);
 
   m_row_exists= true;
   return;
 }
 
 
-void table_events_statements_common::make_row_part_2(PSI_digest_storage *digest)
+void table_events_statements_common::make_row_part_2(const sql_digest_storage *digest)
 {
   /*
     Filling up statement digest information.
   */
-  int safe_byte_count= digest->m_byte_count;
+  uint safe_byte_count= digest->m_byte_count;
   if (safe_byte_count > 0 &&
-      safe_byte_count <= PSI_MAX_DIGEST_STORAGE_SIZE)
+      safe_byte_count <= pfs_max_digest_length)
   {
-    PFS_digest_key md5;
-    compute_md5_hash((char *) md5.m_md5,
-                     (char *) digest->m_token_array,
-                     safe_byte_count);
-
     /* Generate the DIGEST string from the MD5 digest  */
-    MD5_HASH_TO_STRING(md5.m_md5,
+    MD5_HASH_TO_STRING(digest->m_md5,
                        m_row.m_digest.m_digest);
     m_row.m_digest.m_digest_length= MD5_HASH_TO_STRING_LENGTH;
 
     /* Generate the DIGEST_TEXT string from the token array */
-    get_digest_text(m_row.m_digest.m_digest_text, digest);
-    m_row.m_digest.m_digest_text_length= strlen(m_row.m_digest.m_digest_text);
+    compute_digest_text(digest, &m_row.m_digest.m_digest_text);
 
-    if (m_row.m_digest.m_digest_text_length == 0)
+    if (m_row.m_digest.m_digest_text.length() == 0)
       m_row.m_digest.m_digest_length= 0;
   }
   else
   {
     m_row.m_digest.m_digest_length= 0;
-    m_row.m_digest.m_digest_text_length= 0;
+    m_row.m_digest.m_digest_text.length(0);
   }
 
   return;
@@ -491,9 +485,9 @@ int table_events_statements_common::read_row_values(TABLE *table,
           f->set_null();
         break;
       case 11: /* DIGEST_TEXT */
-        if (m_row.m_digest.m_digest_text_length > 0)
-           set_field_longtext_utf8(f, m_row.m_digest.m_digest_text,
-                                   m_row.m_digest.m_digest_text_length);
+        if (m_row.m_digest.m_digest_text.length() > 0)
+           set_field_longtext_utf8(f, m_row.m_digest.m_digest_text.ptr(),
+                                   m_row.m_digest.m_digest_text.length());
         else
           f->set_null();
         break;
@@ -710,11 +704,11 @@ int table_events_statements_current::rnd_pos(const void *pos)
 void table_events_statements_current::make_row(PFS_thread *pfs_thread,
                                                PFS_events_statements *statement)
 {
-  PSI_digest_storage digest;
+  sql_digest_storage digest;
   pfs_lock lock;
   pfs_lock stmt_lock;
 
-  digest_reset(&digest);
+  digest.reset(m_token_array, MAX_DIGEST_STORAGE_SIZE);
   /* Protect this reader against thread termination. */
   pfs_thread->m_lock.begin_optimistic_lock(&lock);
   /* Protect this reader against writing on statement information. */
@@ -838,10 +832,10 @@ int table_events_statements_history::rnd_pos(const void *pos)
 void table_events_statements_history::make_row(PFS_thread *pfs_thread,
                                                PFS_events_statements *statement)
 {
-  PSI_digest_storage digest;
+  sql_digest_storage digest;
   pfs_lock lock;
 
-  digest_reset(&digest);
+  digest.reset(m_token_array, MAX_DIGEST_STORAGE_SIZE);
   /* Protect this reader against thread termination. */
   pfs_thread->m_lock.begin_optimistic_lock(&lock);
 
@@ -942,9 +936,9 @@ int table_events_statements_history_long::rnd_pos(const void *pos)
 
 void table_events_statements_history_long::make_row(PFS_events_statements *statement)
 {
-  PSI_digest_storage digest;
+  sql_digest_storage digest;
 
-  digest_reset(&digest);
+  digest.reset(m_token_array, MAX_DIGEST_STORAGE_SIZE);
   table_events_statements_common::make_row_part_1(statement, &digest);
 
   table_events_statements_common::make_row_part_2(&digest);
diff --git a/storage/perfschema/table_events_statements.h b/storage/perfschema/table_events_statements.h
index e33c6b505bd..a42bbcb2e5a 100644
--- a/storage/perfschema/table_events_statements.h
+++ b/storage/perfschema/table_events_statements.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -175,14 +175,15 @@ protected:
   {}
 
   void make_row_part_1(PFS_events_statements *statement,
-                       PSI_digest_storage *digest);
+                       sql_digest_storage *digest);
 
-  void make_row_part_2(PSI_digest_storage *digest);
+  void make_row_part_2(const sql_digest_storage *digest);
 
   /** Current row. */
   row_events_statements m_row;
   /** True if the current row exists. */
   bool m_row_exists;
+  unsigned char m_token_array[MAX_DIGEST_STORAGE_SIZE];
 };
 
 /** Table PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_CURRENT. */
diff --git a/storage/perfschema/table_helper.cc b/storage/perfschema/table_helper.cc
index 9c10a3ecc88..c9def1bfc74 100644
--- a/storage/perfschema/table_helper.cc
+++ b/storage/perfschema/table_helper.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -25,6 +25,7 @@
 #include "pfs_host.h"
 #include "pfs_user.h"
 #include "pfs_account.h"
+#include "pfs_instr.h"
 
 int PFS_host_row::make_row(PFS_host *pfs)
 {
@@ -109,8 +110,8 @@ int PFS_digest_row::make_row(PFS_statements_digest_stat* pfs)
   if (m_schema_name_length > 0)
     memcpy(m_schema_name, pfs->m_digest_key.m_schema_name, m_schema_name_length);
 
-  int safe_byte_count= pfs->m_digest_storage.m_byte_count;
-  if (safe_byte_count > PSI_MAX_DIGEST_STORAGE_SIZE)
+  uint safe_byte_count= pfs->m_digest_storage.m_byte_count;
+  if (safe_byte_count > pfs_max_digest_length)
     safe_byte_count= 0;
 
   /*
@@ -124,23 +125,22 @@ int PFS_digest_row::make_row(PFS_statements_digest_stat* pfs)
       Calculate digest from MD5 HASH collected to be shown as
       DIGEST in this row.
     */
-    MD5_HASH_TO_STRING(pfs->m_digest_key.m_md5, m_digest);
+    MD5_HASH_TO_STRING(pfs->m_digest_storage.m_md5, m_digest);
     m_digest_length= MD5_HASH_TO_STRING_LENGTH;
 
     /*
       Calculate digest_text information from the token array collected
       to be shown as DIGEST_TEXT column.
     */
-    get_digest_text(m_digest_text, &pfs->m_digest_storage);
-    m_digest_text_length= strlen(m_digest_text);
+    compute_digest_text(&pfs->m_digest_storage, &m_digest_text);
 
-    if (m_digest_text_length == 0)
+    if (m_digest_text.length() == 0)
       m_digest_length= 0;
   }
   else
   {
     m_digest_length= 0;
-    m_digest_text_length= 0;
+    m_digest_text.length(0);
   }
 
   return 0;
@@ -165,9 +165,9 @@ void PFS_digest_row::set_field(uint index, Field *f)
         f->set_null();
       break;
     case 2: /* DIGEST_TEXT */
-      if (m_digest_text_length > 0)
-        PFS_engine_table::set_field_longtext_utf8(f, m_digest_text,
-                                                  m_digest_text_length);
+      if (m_digest_text.length() > 0)
+        PFS_engine_table::set_field_longtext_utf8(f, m_digest_text.ptr(),
+                                                  m_digest_text.length());
       else
         f->set_null();
       break;
diff --git a/storage/perfschema/table_helper.h b/storage/perfschema/table_helper.h
index 76bb289c73b..b1377eb9748 100644
--- a/storage/perfschema/table_helper.h
+++ b/storage/perfschema/table_helper.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -136,9 +136,7 @@ struct PFS_digest_row
   /** Length in bytes of @c m_digest. */
   uint m_digest_length;
   /** Column DIGEST_TEXT. */
-  char m_digest_text[COL_DIGEST_TEXT_SIZE];
-  /** Length in bytes of @c m_digest_text. */
-  uint m_digest_text_length;
+  String m_digest_text;
 
   /** Build a row from a memory buffer. */
   int make_row(PFS_statements_digest_stat*);
diff --git a/storage/perfschema/unittest/CMakeLists.txt b/storage/perfschema/unittest/CMakeLists.txt
index 6add43de7f9..e8b11e807bf 100644
--- a/storage/perfschema/unittest/CMakeLists.txt
+++ b/storage/perfschema/unittest/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -23,5 +23,10 @@ INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include
 
 ADD_DEFINITIONS(-DMYSQL_SERVER ${SSL_DEFINES})
 
-MY_ADD_TESTS(pfs_instr_class pfs_instr_class-oom pfs_instr pfs_instr-oom  pfs_account-oom pfs_host-oom pfs_timer pfs_user-oom pfs
-  EXT "cc" LINK_LIBRARIES perfschema mysys)
+ADD_CONVENIENCE_LIBRARY(pfs_server_stubs pfs_server_stubs.cc)
+
+ADD_DEPENDENCIES(pfs_server_stubs GenError)
+
+MY_ADD_TESTS(pfs_instr_class pfs_instr_class-oom pfs_instr pfs_instr-oom
+             pfs_account-oom pfs_host-oom pfs_timer pfs_user-oom pfs
+  EXT "cc" LINK_LIBRARIES perfschema mysys pfs_server_stubs)
diff --git a/storage/perfschema/unittest/pfs-t.cc b/storage/perfschema/unittest/pfs-t.cc
index 9211443bcca..6121fac098f 100644
--- a/storage/perfschema/unittest/pfs-t.cc
+++ b/storage/perfschema/unittest/pfs-t.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -26,7 +26,6 @@
 
 #include "stub_print_error.h"
 #include "stub_pfs_defaults.h"
-#include "stub_server_misc.h"
 
 /* test helpers, to simulate the setup */
 
@@ -112,6 +111,7 @@ void test_bootstrap()
   param.m_events_statements_history_long_sizing= 0;
   param.m_digest_sizing= 0;
   param.m_session_connect_attrs_sizing= 0;
+  param.m_max_digest_length= 0;
 
   boot= initialize_performance_schema(& param);
   ok(boot != NULL, "boot");
@@ -170,6 +170,7 @@ PSI * load_perfschema()
   param.m_events_statements_history_long_sizing= 0;
   param.m_digest_sizing= 0;
   param.m_session_connect_attrs_sizing= 0;
+  param.m_max_digest_length= 0;
 
   /* test_bootstrap() covered this, assuming it just works */
   boot= initialize_performance_schema(& param);
@@ -1514,6 +1515,7 @@ void test_event_name_index()
   param.m_events_statements_history_long_sizing= 0;
   param.m_digest_sizing= 0;
   param.m_session_connect_attrs_sizing= 0;
+  param.m_max_digest_length= 0;
 
   param.m_mutex_sizing= 0;
   param.m_rwlock_sizing= 0;
diff --git a/storage/perfschema/unittest/pfs_account-oom-t.cc b/storage/perfschema/unittest/pfs_account-oom-t.cc
index 2343e8378ad..f715325401d 100644
--- a/storage/perfschema/unittest/pfs_account-oom-t.cc
+++ b/storage/perfschema/unittest/pfs_account-oom-t.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -22,7 +22,6 @@
 #include <tap.h>
 
 #include "stub_pfs_global.h"
-#include "stub_server_misc.h"
 
 #include <string.h> /* memset */
 
diff --git a/storage/perfschema/unittest/pfs_host-oom-t.cc b/storage/perfschema/unittest/pfs_host-oom-t.cc
index 5b823ce4eac..56597bdda74 100644
--- a/storage/perfschema/unittest/pfs_host-oom-t.cc
+++ b/storage/perfschema/unittest/pfs_host-oom-t.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -22,7 +22,6 @@
 #include <tap.h>
 
 #include "stub_pfs_global.h"
-#include "stub_server_misc.h"
 
 #include <string.h> /* memset */
 
diff --git a/storage/perfschema/unittest/pfs_instr-oom-t.cc b/storage/perfschema/unittest/pfs_instr-oom-t.cc
index 18c0029776d..25caaa6241f 100644
--- a/storage/perfschema/unittest/pfs_instr-oom-t.cc
+++ b/storage/perfschema/unittest/pfs_instr-oom-t.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -22,7 +22,6 @@
 #include <tap.h>
 
 #include "stub_pfs_global.h"
-#include "stub_server_misc.h"
 
 #include <string.h> /* memset */
 
diff --git a/storage/perfschema/unittest/pfs_instr-t.cc b/storage/perfschema/unittest/pfs_instr-t.cc
index fab22b203d3..81df38340df 100644
--- a/storage/perfschema/unittest/pfs_instr-t.cc
+++ b/storage/perfschema/unittest/pfs_instr-t.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -23,8 +23,6 @@
 
 #include <memory.h>
 
-#include "stub_server_misc.h"
-
 void test_no_instruments()
 {
   int rc;
@@ -62,6 +60,7 @@ void test_no_instruments()
   param.m_events_statements_history_long_sizing= 0;
   param.m_digest_sizing= 0;
   param.m_session_connect_attrs_sizing= 0;
+  param.m_max_digest_length= 0;
 
   init_event_name_sizing(& param);
   rc= init_instruments(& param);
@@ -121,6 +120,7 @@ void test_no_instances()
   param.m_events_statements_history_long_sizing= 0;
   param.m_digest_sizing= 0;
   param.m_session_connect_attrs_sizing= 0;
+  param.m_max_digest_length= 0;
 
   init_event_name_sizing(& param);
   rc= init_instruments(& param);
@@ -261,6 +261,7 @@ void test_with_instances()
   param.m_events_statements_history_long_sizing= 0;
   param.m_digest_sizing= 0;
   param.m_session_connect_attrs_sizing= 0;
+  param.m_max_digest_length= 0;
 
   init_event_name_sizing(& param);
   rc= init_instruments(& param);
diff --git a/storage/perfschema/unittest/pfs_instr_class-oom-t.cc b/storage/perfschema/unittest/pfs_instr_class-oom-t.cc
index 264d6126336..1b098ee356e 100644
--- a/storage/perfschema/unittest/pfs_instr_class-oom-t.cc
+++ b/storage/perfschema/unittest/pfs_instr_class-oom-t.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -20,7 +20,6 @@
 #include <tap.h>
 
 #include "stub_pfs_global.h"
-#include "stub_server_misc.h"
 
 void test_oom()
 {
diff --git a/storage/perfschema/unittest/pfs_instr_class-t.cc b/storage/perfschema/unittest/pfs_instr_class-t.cc
index 706c5724a80..06e3200a8d2 100644
--- a/storage/perfschema/unittest/pfs_instr_class-t.cc
+++ b/storage/perfschema/unittest/pfs_instr_class-t.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -21,8 +21,6 @@
 #include <pfs_global.h>
 #include <tap.h>
 
-#include "stub_server_misc.h"
-
 void test_no_registration()
 {
   int rc;
diff --git a/storage/perfschema/unittest/stub_server_misc.h b/storage/perfschema/unittest/pfs_server_stubs.cc
index 946da533727..a8f417e390b 100644
--- a/storage/perfschema/unittest/stub_server_misc.h
+++ b/storage/perfschema/unittest/pfs_server_stubs.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -17,12 +17,19 @@
   Minimal code to be able to link a unit test.
 */
 
+#include "my_global.h"
+#include "m_ctype.h"
+#include "sql_class.h"
+#include "sql_show.h"
+
+struct sql_digest_storage;
+
 volatile bool ready_to_exit= false;
 
 uint lower_case_table_names= 0;
 CHARSET_INFO *files_charset_info= NULL;
 
-extern "C" void compute_md5_hash(char *, const char *, int)
+void compute_digest_md5(const sql_digest_storage *, unsigned char *)
 {
 }
 
diff --git a/storage/perfschema/unittest/pfs_user-oom-t.cc b/storage/perfschema/unittest/pfs_user-oom-t.cc
index 3cb80e1b7f9..6c936ba8ffb 100644
--- a/storage/perfschema/unittest/pfs_user-oom-t.cc
+++ b/storage/perfschema/unittest/pfs_user-oom-t.cc
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -22,7 +22,6 @@
 #include <tap.h>
 
 #include "stub_pfs_global.h"
-#include "stub_server_misc.h"
 
 #include <string.h> /* memset */