diff options
| -rw-r--r-- | mysql-test/r/information_schema.result | 15 | ||||
| -rw-r--r-- | mysql-test/t/information_schema.test | 14 | ||||
| -rw-r--r-- | sql/sql_select.cc | 2 |
3 files changed, 31 insertions, 0 deletions
diff --git a/mysql-test/r/information_schema.result b/mysql-test/r/information_schema.result index 3fffce73aa9..43eedc19f12 100644 --- a/mysql-test/r/information_schema.result +++ b/mysql-test/r/information_schema.result @@ -1254,3 +1254,18 @@ COLUMN_NAME MD5(COLUMN_DEFAULT) LENGTH(COLUMN_DEFAULT) COLUMN_DEFAULT=get_value( fld1 7cf7a6782be951a1f2464a350da926a5 65532 1 DROP TABLE bug23037; DROP FUNCTION get_value; +create view v1 as +select table_schema as object_schema, +table_name as object_name, +table_type as object_type +from information_schema.tables +order by object_schema; +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found +2 DERIVED tables ALL NULL NULL NULL NULL 2 Using filesort +explain select * from (select table_name from information_schema.tables) as a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found +2 DERIVED tables ALL NULL NULL NULL NULL 2 +drop view v1; diff --git a/mysql-test/t/information_schema.test b/mysql-test/t/information_schema.test index 27007bbe16a..dd203add344 100644 --- a/mysql-test/t/information_schema.test +++ b/mysql-test/t/information_schema.test @@ -973,4 +973,18 @@ DROP FUNCTION get_value; + +# +# Bug#22413: EXPLAIN SELECT FROM view with ORDER BY yield server crash +# +create view v1 as +select table_schema as object_schema, + table_name as object_name, + table_type as object_type +from information_schema.tables +order by object_schema; +explain select * from v1; +explain select * from (select table_name from information_schema.tables) as a; +drop view v1; + # End of 5.0 tests. diff --git a/sql/sql_select.cc b/sql/sql_select.cc index adb57e3e9f4..4d664edd5af 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -1471,6 +1471,7 @@ JOIN::exec() curr_join->examined_rows= 0; if ((curr_join->select_lex->options & OPTION_SCHEMA_TABLE) && + !thd->lex->describe && get_schema_tables_result(curr_join)) { DBUG_VOID_RETURN; @@ -12278,6 +12279,7 @@ create_sort_index(THD *thd, JOIN *join, ORDER *order, /* Fill schema tables with data before filesort if it's necessary */ if ((join->select_lex->options & OPTION_SCHEMA_TABLE) && + !thd->lex->describe && get_schema_tables_result(join)) goto err; |