MDEV-24139: CHECK_CLAUSE field in INFORMATION_SCHEMA.CHECK_CONSTRAINTS...

MDEV-24139: CHECK_CLAUSE field in INFORMATION_SCHEMA.CHECK_CONSTRAINTS truncate check constraints expressions

- Reviewed by: daniel@mariadb.org

mysql-test/r/information_schema.result

@@ -843,6 +843,7 @@ information_schema.columns
 where data_type = 'longtext' and table_schema != 'performance_schema';
 table_schema	table_name	column_name
 information_schema	ALL_PLUGINS	PLUGIN_DESCRIPTION
+information_schema	CHECK_CONSTRAINTS	CHECK_CLAUSE
 information_schema	COLUMNS	COLUMN_DEFAULT
 information_schema	COLUMNS	COLUMN_TYPE
 information_schema	COLUMNS	GENERATION_EXPRESSION

mysql-test/suite/funcs_1/r/is_check_constraints.result

@@ -90,7 +90,9 @@ CREATE TABLE t3
 (
 a int,
 b int check (b>0), # field constraint named 'b'
-CONSTRAINT b check (b>10) # table constraint
+CONSTRAINT b check (b>10), # table constraint
+# `CHECK_CLAUSE` should allow more then `var(64)` constraints
+CONSTRAINT b1 check (b<123456789012345678901234567890123456789012345678901234567890123456789)
 ) ENGINE=InnoDB;
 SELECT * from information_schema.check_constraints;
 CONSTRAINT_CATALOG	CONSTRAINT_SCHEMA	TABLE_NAME	CONSTRAINT_NAME	CHECK_CLAUSE
@@ -104,6 +106,7 @@ def	foo	t2	CHK_dates	`start_date` is null
 def	foo	t2	name	char_length(`name`) > 2
 def	foo	t3	b	`b` > 0
 def	foo	t3	b	`b` > 10
+def	foo	t3	b1	`b` < 123456789012345678901234567890123456789012345678901234567890123456789
 disconnect con1;
 CONNECT con2, localhost, boo2,, test;
 SELECT * from information_schema.check_constraints;

mysql-test/suite/funcs_1/r/is_columns_is.result

@@ -24,7 +24,7 @@ def	information_schema	CHARACTER_SETS	CHARACTER_SET_NAME	1	''	NO	varchar	32	96	N
 def	information_schema	CHARACTER_SETS	DEFAULT_COLLATE_NAME	2	''	NO	varchar	32	96	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(32)			select		NEVER	NULL
 def	information_schema	CHARACTER_SETS	DESCRIPTION	3	''	NO	varchar	60	180	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(60)			select		NEVER	NULL
 def	information_schema	CHARACTER_SETS	MAXLEN	4	0	NO	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(3)			select		NEVER	NULL
-def	information_schema	CHECK_CONSTRAINTS	CHECK_CLAUSE	5	''	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)			select		NEVER	NULL
+def	information_schema	CHECK_CONSTRAINTS	CHECK_CLAUSE	5	''	NO	longtext	4294967295	4294967295	NULL	NULL	NULL	utf8	utf8_general_ci	longtext			select		NEVER	NULL
 def	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_CATALOG	1	''	NO	varchar	512	1536	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(512)			select		NEVER	NULL
 def	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_NAME	4	''	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)			select		NEVER	NULL
 def	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_SCHEMA	2	''	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)			select		NEVER	NULL
@@ -563,7 +563,7 @@ NULL	information_schema	CHARACTER_SETS	MAXLEN	bigint	NULL	NULL	NULL	NULL	bigint(
 3.0000	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_SCHEMA	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	CHECK_CONSTRAINTS	TABLE_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)
-3.0000	information_schema	CHECK_CONSTRAINTS	CHECK_CLAUSE	varchar	64	192	utf8	utf8_general_ci	varchar(64)
+1.0000	information_schema	CHECK_CONSTRAINTS	CHECK_CLAUSE	longtext	4294967295	4294967295	utf8	utf8_general_ci	longtext
 3.0000	information_schema	CLIENT_STATISTICS	CLIENT	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 NULL	information_schema	CLIENT_STATISTICS	TOTAL_CONNECTIONS	bigint	NULL	NULL	NULL	NULL	bigint(21)
 NULL	information_schema	CLIENT_STATISTICS	CONCURRENT_CONNECTIONS	bigint	NULL	NULL	NULL	NULL	bigint(21)

mysql-test/suite/funcs_1/r/is_columns_is_embedded.result

@@ -24,7 +24,7 @@ def	information_schema	CHARACTER_SETS	CHARACTER_SET_NAME	1	''	NO	varchar	32	96	N
 def	information_schema	CHARACTER_SETS	DEFAULT_COLLATE_NAME	2	''	NO	varchar	32	96	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(32)					NEVER	NULL
 def	information_schema	CHARACTER_SETS	DESCRIPTION	3	''	NO	varchar	60	180	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(60)					NEVER	NULL
 def	information_schema	CHARACTER_SETS	MAXLEN	4	0	NO	bigint	NULL	NULL	19	0	NULL	NULL	NULL	bigint(3)					NEVER	NULL
-def	information_schema	CHECK_CONSTRAINTS	CHECK_CLAUSE	5	''	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)					NEVER	NULL
+def	information_schema	CHECK_CONSTRAINTS	CHECK_CLAUSE	5	''	NO	longtext	4294967295	4294967295	NULL	NULL	NULL	utf8	utf8_general_ci	longtext					NEVER	NULL
 def	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_CATALOG	1	''	NO	varchar	512	1536	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(512)					NEVER	NULL
 def	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_NAME	4	''	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)					NEVER	NULL
 def	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_SCHEMA	2	''	NO	varchar	64	192	NULL	NULL	NULL	utf8	utf8_general_ci	varchar(64)					NEVER	NULL
@@ -563,7 +563,7 @@ NULL	information_schema	CHARACTER_SETS	MAXLEN	bigint	NULL	NULL	NULL	NULL	bigint(
 3.0000	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_SCHEMA	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	CHECK_CONSTRAINTS	TABLE_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 3.0000	information_schema	CHECK_CONSTRAINTS	CONSTRAINT_NAME	varchar	64	192	utf8	utf8_general_ci	varchar(64)
-3.0000	information_schema	CHECK_CONSTRAINTS	CHECK_CLAUSE	varchar	64	192	utf8	utf8_general_ci	varchar(64)
+1.0000	information_schema	CHECK_CONSTRAINTS	CHECK_CLAUSE	longtext	4294967295	4294967295	utf8	utf8_general_ci	longtext
 3.0000	information_schema	CLIENT_STATISTICS	CLIENT	varchar	64	192	utf8	utf8_general_ci	varchar(64)
 NULL	information_schema	CLIENT_STATISTICS	TOTAL_CONNECTIONS	bigint	NULL	NULL	NULL	NULL	bigint(21)
 NULL	information_schema	CLIENT_STATISTICS	CONCURRENT_CONNECTIONS	bigint	NULL	NULL	NULL	NULL	bigint(21)

mysql-test/suite/funcs_1/r/is_tables_is.result

@@ -85,9 +85,9 @@ TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
 TABLE_NAME	CHECK_CONSTRAINTS
 TABLE_TYPE	SYSTEM VIEW
-ENGINE	MEMORY
+ENGINE	MYISAM_OR_MARIA
 VERSION	11
-ROW_FORMAT	Fixed
+ROW_FORMAT	DYNAMIC_OR_PAGE
 TABLE_ROWS	#TBLR#
 AVG_ROW_LENGTH	#ARL#
 DATA_LENGTH	#DL#
@@ -1044,9 +1044,9 @@ TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
 TABLE_NAME	CHECK_CONSTRAINTS
 TABLE_TYPE	SYSTEM VIEW
-ENGINE	MEMORY
+ENGINE	MYISAM_OR_MARIA
 VERSION	11
-ROW_FORMAT	Fixed
+ROW_FORMAT	DYNAMIC_OR_PAGE
 TABLE_ROWS	#TBLR#
 AVG_ROW_LENGTH	#ARL#
 DATA_LENGTH	#DL#

mysql-test/suite/funcs_1/r/is_tables_is_embedded.result

@@ -85,9 +85,9 @@ TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
 TABLE_NAME	CHECK_CONSTRAINTS
 TABLE_TYPE	SYSTEM VIEW
-ENGINE	MEMORY
+ENGINE	MYISAM_OR_MARIA
 VERSION	11
-ROW_FORMAT	Fixed
+ROW_FORMAT	DYNAMIC_OR_PAGE
 TABLE_ROWS	#TBLR#
 AVG_ROW_LENGTH	#ARL#
 DATA_LENGTH	#DL#
@@ -1044,9 +1044,9 @@ TABLE_CATALOG	def
 TABLE_SCHEMA	information_schema
 TABLE_NAME	CHECK_CONSTRAINTS
 TABLE_TYPE	SYSTEM VIEW
-ENGINE	MEMORY
+ENGINE	MYISAM_OR_MARIA
 VERSION	11
-ROW_FORMAT	Fixed
+ROW_FORMAT	DYNAMIC_OR_PAGE
 TABLE_ROWS	#TBLR#
 AVG_ROW_LENGTH	#ARL#
 DATA_LENGTH	#DL#

mysql-test/suite/funcs_1/t/is_check_constraints.test

@@ -68,7 +68,9 @@ CREATE TABLE t3
 (
 a int,
 b int check (b>0), # field constraint named 'b'
-CONSTRAINT b check (b>10) # table constraint
+CONSTRAINT b check (b>10), # table constraint
+# `CHECK_CLAUSE` should allow more then `var(64)` constraints
+CONSTRAINT b1 check (b<123456789012345678901234567890123456789012345678901234567890123456789)
 ) ENGINE=InnoDB;
 --sorted_result
 SELECT * from information_schema.check_constraints;

sql/sql_show.cc

@@ -9410,7 +9410,7 @@ ST_FIELD_INFO check_constraints_fields_info[]=
   {"TABLE_NAME", NAME_CHAR_LEN, MYSQL_TYPE_STRING, 0, 0, 0, OPEN_FULL_TABLE},
   {"CONSTRAINT_NAME", NAME_CHAR_LEN, MYSQL_TYPE_STRING, 0, 0, 0,
    OPEN_FULL_TABLE},
-  {"CHECK_CLAUSE", NAME_CHAR_LEN, MYSQL_TYPE_STRING, 0, 0, 0,
+  {"CHECK_CLAUSE", MAX_FIELD_VARCHARLENGTH , MYSQL_TYPE_STRING, 0, 0, 0,
    OPEN_FULL_TABLE},
   {0, 0, MYSQL_TYPE_STRING, 0, 0, 0, SKIP_OPEN_TABLE}
 };