MDEV-7563 Support CHECK constraint as in (or close to) SQL Standard

MDEV-10134 Add full support for DEFAULT

- Added support for using tables with MySQL 5.7 virtual fields,
  including MySQL 5.7 syntax
- Better error messages also for old cases
- CREATE ... SELECT now also updates timestamp columns
- Blob can now have default values
- Added new system variable "check_constraint_checks", to turn of
  CHECK constraint checking if needed.
- Removed some engine independent tests in suite vcol to only test myisam
- Moved some tests from 'include' to 't'. Should some day be done for all tests.
- FRM version increased to 11 if one uses virtual fields or constraints
- Changed to use a bitmap to check if a field has got a value, instead of
  setting HAS_EXPLICIT_VALUE bit in field flags
- Expressions can now be up to 65K in total
- Ensure we are not refering to uninitialized fields when handling virtual fields or defaults
- Changed check_vcol_func_processor() to return a bitmap of used types
- Had to change some functions that calculated cached value in fix_fields to do
  this in val() or getdate() instead.
- store_now_in_TIME() now takes a THD argument
- fill_record() now updates default values
- Add a lookahead for NOT NULL, to be able to handle DEFAULT 1+1 NOT NULL
- Automatically generate a name for constraints that doesn't have a name
- Added support for ALTER TABLE DROP CONSTRAINT
- Ensure that partition functions register virtual fields used. This fixes
  some bugs when using virtual fields in a partitioning function

4 files changed, 12 insertions, 26 deletions

diff --git a/storage/tokudb/mysql-test/rpl/r/rpl_extra_col_master_tokudb.result b/storage/tokudb/mysql-test/rpl/r/rpl_extra_col_master_tokudb.result
index b5d9ecbedae..3f3f59c7620 100644
--- a/storage/tokudb/mysql-test/rpl/r/rpl_extra_col_master_tokudb.result
+++ b/storage/tokudb/mysql-test/rpl/r/rpl_extra_col_master_tokudb.result
@@ -643,7 +643,7 @@ c1	c3	hex(c4)	c5	c6
 ************
 connection slave;
 include/wait_for_slave_sql_error.inc [errno=1091]
-Last_SQL_Error = 'Error 'Can't DROP 'c7'; check that column/key exists' on query. Default database: 'test'. Query: 'ALTER TABLE t14 DROP COLUMN c7''
+Last_SQL_Error = 'Error 'Can't DROP 'c7'; check that constraint/column/key exists' on query. Default database: 'test'. Query: 'ALTER TABLE t14 DROP COLUMN c7''
 STOP SLAVE;
 RESET SLAVE;
 
diff --git a/storage/tokudb/mysql-test/tokudb/r/type_blob.result b/storage/tokudb/mysql-test/tokudb/r/type_blob.result
index 4a3b7206a62..1350bc03045 100644
--- a/storage/tokudb/mysql-test/tokudb/r/type_blob.result
+++ b/storage/tokudb/mysql-test/tokudb/r/type_blob.result
@@ -38,9 +38,9 @@ ERROR 42000: Column length too big for column 'a' (max = 255); use BLOB or TEXT
 CREATE TABLE t2 (a char(256));
 ERROR 42000: Column length too big for column 'a' (max = 255); use BLOB or TEXT instead
 CREATE TABLE t1 (a varchar(70000) default "hello");
-ERROR 42000: Column length too big for column 'a' (max = 65535); use BLOB or TEXT instead
+Warnings:
+Note	1246	Converting column 'a' from VARCHAR to TEXT
 CREATE TABLE t2 (a blob default "hello");
-ERROR 42000: BLOB/TEXT column 'a' can't have a default value
 drop table if exists t1,t2;
 create table t1 (nr int(5) not null auto_increment,b blob,str char(10), primary key (nr));
 insert into t1 values (null,"a","A");
@@ -502,11 +502,7 @@ foobar	boggle
 fish	10
 drop table t1;
 create table t1 (id integer auto_increment unique,imagem LONGBLOB not null default '');
-Warnings:
-Warning	1101	BLOB/TEXT column 'imagem' can't have a default value
 insert into t1 (id) values (1);
-Warnings:
-Warning	1364	Field 'imagem' doesn't have a default value
 select
 charset(load_file('../../std_data/words.dat')),
 collation(load_file('../../std_data/words.dat')),
@@ -776,21 +772,19 @@ NULL
 620000000000
 drop table t1;
 create table t1 (a text default '');
-Warnings:
-Warning	1101	BLOB/TEXT column 'a' can't have a default value
 show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `a` text DEFAULT NULL
+  `a` text DEFAULT ''
 ) ENGINE=ENGINE DEFAULT CHARSET=latin1
 insert into t1 values (default);
 select * from t1;
 a
-NULL
+
 drop table t1;
 set @@sql_mode='TRADITIONAL';
 create table t1 (a text default '');
-ERROR 42000: BLOB/TEXT column 'a' can't have a default value
+drop table t1;
 set @@sql_mode='';
 CREATE TABLE t (c TEXT CHARSET ASCII);
 INSERT INTO t (c) VALUES (REPEAT('1',65537));
diff --git a/storage/tokudb/mysql-test/tokudb/r/type_ranges.result b/storage/tokudb/mysql-test/tokudb/r/type_ranges.result
index dd9451fd101..23dc139d410 100644
--- a/storage/tokudb/mysql-test/tokudb/r/type_ranges.result
+++ b/storage/tokudb/mysql-test/tokudb/r/type_ranges.result
@@ -39,9 +39,6 @@ KEY (ulong),
 KEY (ulonglong,ulong),
 KEY (options,flags)
 );
-Warnings:
-Warning	1101	BLOB/TEXT column 'mediumblob_col' can't have a default value
-Warning	1101	BLOB/TEXT column 'longblob_col' can't have a default value
 show full fields from t1;
 Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
 auto	int(5) unsigned	NULL	NO	PRI	NULL	auto_increment	#	
@@ -64,8 +61,8 @@ time_field	time	NULL	YES		NULL		#
 date_time	datetime	NULL	YES		NULL		#	
 blob_col	blob	NULL	YES		NULL		#	
 tinyblob_col	tinyblob	NULL	YES		NULL		#	
-mediumblob_col	mediumblob	NULL	NO		NULL		#	
-longblob_col	longblob	NULL	NO		NULL		#	
+mediumblob_col	mediumblob	NULL	NO		''		#	
+longblob_col	longblob	NULL	NO		''		#	
 options	enum('one','two','tree')	latin1_swedish_ci	NO	MUL	NULL		#	
 flags	set('one','two','tree')	latin1_swedish_ci	NO				#	
 show keys from t1;
@@ -130,9 +127,6 @@ Warning	1264	Out of range value for column 'ushort' at row 1
 Warning	1264	Out of range value for column 'umedium' at row 1
 Warning	1265	Data truncated for column 'options' at row 1
 insert into t1 (tiny) values (1);
-Warnings:
-Warning	1364	Field 'mediumblob_col' doesn't have a default value
-Warning	1364	Field 'longblob_col' doesn't have a default value
 select auto,string,tiny,short,medium,long_int,longlong,real_float,real_double,utiny,ushort,umedium,ulong,ulonglong,mod(floor(time_stamp/1000000),1000000)-mod(curdate(),1000000),date_field,time_field,date_time,blob_col,tinyblob_col,mediumblob_col,longblob_col from t1;
 auto	string	tiny	short	medium	long_int	longlong	real_float	real_double	utiny	ushort	umedium	ulong	ulonglong	mod(floor(time_stamp/1000000),1000000)-mod(curdate(),1000000)	date_field	time_field	date_time	blob_col	tinyblob_col	mediumblob_col	longblob_col
 10	1	1	1	1	1	1	1.0	1.0000	1	00001	1	1	1	0	0000-00-00	00:00:00	0000-00-00 00:00:00	1	1	1	1
@@ -239,7 +233,7 @@ time_field	time	NULL	YES		NULL		#
 date_time	datetime	NULL	YES		NULL		#	
 new_blob_col	varchar(20)	latin1_swedish_ci	YES		NULL		#	
 tinyblob_col	tinyblob	NULL	YES		NULL		#	
-mediumblob_col	mediumblob	NULL	NO		NULL		#	
+mediumblob_col	mediumblob	NULL	NO		''		#	
 options	enum('one','two','tree')	latin1_swedish_ci	NO	MUL	NULL		#	
 flags	set('one','two','tree')	latin1_swedish_ci	NO				#	
 new_field	char(10)	latin1_swedish_ci	NO		new		#	
@@ -265,7 +259,7 @@ time_field	time	NULL	YES		NULL		#
 date_time	datetime	NULL	YES		NULL		#	
 new_blob_col	varchar(20)	latin1_swedish_ci	YES		NULL		#	
 tinyblob_col	tinyblob	NULL	YES		NULL		#	
-mediumblob_col	mediumblob	NULL	NO		NULL		#	
+mediumblob_col	mediumblob	NULL	NO		''		#	
 options	enum('one','two','tree')	latin1_swedish_ci	NO		NULL		#	
 flags	set('one','two','tree')	latin1_swedish_ci	NO				#	
 new_field	char(10)	latin1_swedish_ci	NO		new		#	
diff --git a/storage/tokudb/mysql-test/tokudb/t/type_blob.test b/storage/tokudb/mysql-test/tokudb/t/type_blob.test
index c1055adbe7a..6a429c46a55 100644
--- a/storage/tokudb/mysql-test/tokudb/t/type_blob.test
+++ b/storage/tokudb/mysql-test/tokudb/t/type_blob.test
@@ -37,9 +37,7 @@ drop table t1,t2,t3,t4;
 CREATE TABLE t1 (a char(257) default "hello");
 --error 1074
 CREATE TABLE t2 (a char(256));
---error 1074
 CREATE TABLE t1 (a varchar(70000) default "hello");
---error 1101
 CREATE TABLE t2 (a blob default "hello");
 
 # Safety to be able to continue with other tests if above fails
@@ -439,8 +437,8 @@ insert into t1 values (default);
 select * from t1;
 drop table t1;
 set @@sql_mode='TRADITIONAL';
---error ER_BLOB_CANT_HAVE_DEFAULT
 create table t1 (a text default '');
+drop table t1;
 set @@sql_mode='';
 
 #
@@ -541,7 +539,7 @@ CREATE TABLE b15776 (a year(-2));
 
 
 # We've already tested the case, but this should visually show that 
-# widths that are too large to be interpreted cause DISPLAYWIDTH errors.
+# widths that are too large to be interpreted cause errors.
 --error ER_TOO_BIG_DISPLAYWIDTH
 CREATE TABLE b15776 (a int(999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999));
 --error ER_TOO_BIG_FIELDLENGTH