SHOW TABLES FROM information_schema LIKE 'TABLE_CONSTRAINTS';
Tables_in_information_schema (TABLE_CONSTRAINTS)
TABLE_CONSTRAINTS
#######################################################################
# Testcase 3.2.1.1: INFORMATION_SCHEMA tables can be queried via SELECT
#######################################################################
DROP VIEW      IF EXISTS test.v1;
DROP PROCEDURE IF EXISTS test.p1;
DROP FUNCTION  IF EXISTS test.f1;
CREATE VIEW test.v1 AS     SELECT * FROM information_schema.TABLE_CONSTRAINTS;
CREATE PROCEDURE test.p1() SELECT * FROM information_schema.TABLE_CONSTRAINTS;
CREATE FUNCTION test.f1() returns BIGINT
BEGIN
DECLARE counter BIGINT DEFAULT NULL;
SELECT COUNT(*) INTO counter FROM information_schema.TABLE_CONSTRAINTS;
RETURN counter;
END//
# Attention: The printing of the next result sets is disabled.
SELECT * FROM information_schema.TABLE_CONSTRAINTS;
SELECT * FROM test.v1;
CALL test.p1;
SELECT test.f1();
DROP VIEW test.v1;
DROP PROCEDURE test.p1;
DROP FUNCTION test.f1;
#########################################################################
# Testcase 3.2.10.1: INFORMATION_SCHEMA.TABLE_CONSTRAINTS layout
#########################################################################
DESCRIBE          information_schema.TABLE_CONSTRAINTS;
Field	Type	Null	Key	Default	Extra
CONSTRAINT_CATALOG	varchar(512)	NO		NULL	
CONSTRAINT_SCHEMA	varchar(64)	NO		NULL	
CONSTRAINT_NAME	varchar(64)	NO		NULL	
TABLE_SCHEMA	varchar(64)	NO		NULL	
TABLE_NAME	varchar(64)	NO		NULL	
CONSTRAINT_TYPE	varchar(64)	NO		NULL	
SHOW CREATE TABLE information_schema.TABLE_CONSTRAINTS;
Table	Create Table
TABLE_CONSTRAINTS	CREATE TEMPORARY TABLE `TABLE_CONSTRAINTS` (
  `CONSTRAINT_CATALOG` varchar(512) NOT NULL,
  `CONSTRAINT_SCHEMA` varchar(64) NOT NULL,
  `CONSTRAINT_NAME` varchar(64) NOT NULL,
  `TABLE_SCHEMA` varchar(64) NOT NULL,
  `TABLE_NAME` varchar(64) NOT NULL,
  `CONSTRAINT_TYPE` varchar(64) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
SHOW COLUMNS FROM information_schema.TABLE_CONSTRAINTS;
Field	Type	Null	Key	Default	Extra
CONSTRAINT_CATALOG	varchar(512)	NO		NULL	
CONSTRAINT_SCHEMA	varchar(64)	NO		NULL	
CONSTRAINT_NAME	varchar(64)	NO		NULL	
TABLE_SCHEMA	varchar(64)	NO		NULL	
TABLE_NAME	varchar(64)	NO		NULL	
CONSTRAINT_TYPE	varchar(64)	NO		NULL	
SELECT constraint_catalog, constraint_schema, constraint_name,
table_schema, table_name
FROM information_schema.table_constraints
WHERE constraint_catalog IS NOT NULL
ORDER BY constraint_schema, table_name, constraint_name;
constraint_catalog	constraint_schema	constraint_name	table_schema	table_name
def	mysql	PRIMARY	mysql	columns_priv
def	mysql	PRIMARY	mysql	column_stats
def	mysql	PRIMARY	mysql	db
def	mysql	PRIMARY	mysql	event
def	mysql	PRIMARY	mysql	func
def	mysql	PRIMARY	mysql	global_priv
def	mysql	Priv	mysql	global_priv
def	mysql	PRIMARY	mysql	gtid_slave_pos
def	mysql	name	mysql	help_category
def	mysql	PRIMARY	mysql	help_category
def	mysql	name	mysql	help_keyword
def	mysql	PRIMARY	mysql	help_keyword
def	mysql	PRIMARY	mysql	help_relation
def	mysql	name	mysql	help_topic
def	mysql	PRIMARY	mysql	help_topic
def	mysql	PRIMARY	mysql	index_stats
def	mysql	PRIMARY	mysql	innodb_index_stats
def	mysql	PRIMARY	mysql	innodb_table_stats
def	mysql	PRIMARY	mysql	plugin
def	mysql	PRIMARY	mysql	proc
def	mysql	PRIMARY	mysql	procs_priv
def	mysql	PRIMARY	mysql	proxies_priv
def	mysql	Host	mysql	roles_mapping
def	mysql	PRIMARY	mysql	servers
def	mysql	PRIMARY	mysql	tables_priv
def	mysql	PRIMARY	mysql	table_stats
def	mysql	PRIMARY	mysql	time_zone
def	mysql	PRIMARY	mysql	time_zone_leap_second
def	mysql	PRIMARY	mysql	time_zone_name
def	mysql	PRIMARY	mysql	time_zone_transition
def	mysql	PRIMARY	mysql	time_zone_transition_type
def	mysql	commit_id	mysql	transaction_registry
def	mysql	PRIMARY	mysql	transaction_registry
def	sys	PRIMARY	sys	sys_config
#########################################################################################
# Testcase 3.2.7.2 + 3.2.7.3: INFORMATION_SCHEMA.TABLE_CONSTRAINTS accessible information
#########################################################################################
CREATE DATABASE db_datadict;
CREATE TABLE db_datadict.t1 (f1 BIGINT, f2 BIGINT, f3 BIGINT, f4 BIGINT,
f5 BIGINT, f6 BIGINT, PRIMARY KEY (f1,f2))
ENGINE = <some_engine_type>;
CREATE UNIQUE INDEX my_idx1 ON db_datadict.t1(f6,f1);
CREATE UNIQUE INDEX my_idx2 ON db_datadict.t1(f3);
CREATE TABLE db_datadict.t2 (f1 BIGINT, f2 BIGINT, f3 BIGINT, f4 BIGINT,
f5 BIGINT, f6 BIGINT, PRIMARY KEY (f1,f2))
ENGINE = <some_engine_type>;
CREATE USER 'testuser1'@'localhost';
GRANT SELECT(f5), UPDATE(f6) ON db_datadict.t1 TO 'testuser1'@'localhost';
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT SELECT (`f5`), UPDATE (`f6`) ON `db_datadict`.`t1` TO `testuser1`@`localhost`
SELECT * FROM information_schema.table_constraints
WHERE table_schema = 'db_datadict'
ORDER BY table_schema,table_name, constraint_name;
CONSTRAINT_CATALOG	CONSTRAINT_SCHEMA	CONSTRAINT_NAME	TABLE_SCHEMA	TABLE_NAME	CONSTRAINT_TYPE
def	db_datadict	my_idx1	db_datadict	t1	UNIQUE
def	db_datadict	my_idx2	db_datadict	t1	UNIQUE
def	db_datadict	PRIMARY	db_datadict	t1	PRIMARY KEY
def	db_datadict	PRIMARY	db_datadict	t2	PRIMARY KEY
SHOW INDEXES FROM db_datadict.t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment	Ignored
t1	0	PRIMARY	1	f1	###	###	###	###	###	###	###		NO
t1	0	PRIMARY	2	f2	###	###	###	###	###	###	###		NO
t1	0	my_idx1	1	f6	###	###	###	###	###	###	###		NO
t1	0	my_idx1	2	f1	###	###	###	###	###	###	###		NO
t1	0	my_idx2	1	f3	###	###	###	###	###	###	###		NO
SHOW INDEXES FROM db_datadict.t2;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment	Ignored
t2	0	PRIMARY	1	f1	###	###	###	###	###	###	###		NO
t2	0	PRIMARY	2	f2	###	###	###	###	###	###	###		NO
connect  testuser1, localhost, testuser1, , db_datadict;
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT SELECT (`f5`), UPDATE (`f6`) ON `db_datadict`.`t1` TO `testuser1`@`localhost`
SELECT * FROM information_schema.table_constraints
WHERE table_schema = 'db_datadict'
ORDER BY table_schema,table_name, constraint_name;
CONSTRAINT_CATALOG	CONSTRAINT_SCHEMA	CONSTRAINT_NAME	TABLE_SCHEMA	TABLE_NAME	CONSTRAINT_TYPE
def	db_datadict	my_idx1	db_datadict	t1	UNIQUE
def	db_datadict	my_idx2	db_datadict	t1	UNIQUE
def	db_datadict	PRIMARY	db_datadict	t1	PRIMARY KEY
SHOW INDEXES FROM db_datadict.t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment	Ignored
SHOW INDEXES FROM db_datadict.t2;
ERROR 42000: SELECT command denied to user 'testuser1'@'localhost' for table `db_datadict`.`t2`
connection default;
disconnect testuser1;
DROP USER 'testuser1'@'localhost';
DROP DATABASE db_datadict;
#########################################################################################
# Testcase 3.2.1.13+3.2.1.14+3.2.1.15: INFORMATION_SCHEMA.TABLE_CONSTRAINTS modifications
#########################################################################################
CREATE DATABASE db_datadict;
SELECT table_name FROM information_schema.table_constraints
WHERE table_name LIKE 't1_my_table%';
table_name
CREATE TABLE test.t1_my_table
(f1 CHAR(12), f2 TIMESTAMP, f4 BIGINT, PRIMARY KEY(f1))
DEFAULT CHARACTER SET latin1 COLLATE latin1_swedish_ci
ENGINE = <engine_type>;
SELECT constraint_name, table_schema, table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_table';
constraint_name	table_schema	table_name	constraint_type
PRIMARY	test	t1_my_table	PRIMARY KEY
SELECT table_name FROM information_schema.table_constraints
WHERE table_name LIKE 't1_my_table%';
table_name
t1_my_table
RENAME TABLE test.t1_my_table TO test.t1_my_tablex;
SELECT table_name FROM information_schema.table_constraints
WHERE table_name LIKE 't1_my_table%';
table_name
t1_my_tablex
SELECT table_schema,table_name FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex';
table_schema	table_name
test	t1_my_tablex
RENAME TABLE test.t1_my_tablex TO db_datadict.t1_my_tablex;
SELECT table_schema,table_name FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex';
table_schema	table_name
db_datadict	t1_my_tablex
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
CREATE INDEX f2 ON db_datadict.t1_my_tablex(f2);
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
DROP INDEX f2 ON db_datadict.t1_my_tablex;
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
ALTER TABLE db_datadict.t1_my_tablex ADD UNIQUE (f2);
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	f2	db_datadict	t1_my_tablex	UNIQUE
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
DROP INDEX f2 ON db_datadict.t1_my_tablex;
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
ALTER TABLE db_datadict.t1_my_tablex ADD UNIQUE my_idx (f4,f1);
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	my_idx	db_datadict	t1_my_tablex	UNIQUE
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
DROP INDEX my_idx ON db_datadict.t1_my_tablex;
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
ALTER TABLE db_datadict.t1_my_tablex ADD UNIQUE my_idx (f2);
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	my_idx	db_datadict	t1_my_tablex	UNIQUE
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	my_idx	db_datadict	t1_my_tablex	UNIQUE
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
ALTER TABLE db_datadict.t1_my_tablex
DROP COLUMN f2;
SELECT constraint_schema, constraint_name, table_schema,
table_name, constraint_type
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex'
ORDER BY table_schema,table_name, constraint_name;
constraint_schema	constraint_name	table_schema	table_name	constraint_type
db_datadict	PRIMARY	db_datadict	t1_my_tablex	PRIMARY KEY
SELECT table_name
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex';
table_name
t1_my_tablex
DROP TABLE db_datadict.t1_my_tablex;
SELECT table_name
FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex';
table_name
SELECT table_name FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex';
table_name
CREATE TABLE db_datadict.t1_my_tablex
ENGINE = <engine_type> AS
SELECT 1 AS f1;
SELECT table_name FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex';
table_name
ALTER TABLE db_datadict.t1_my_tablex ADD PRIMARY KEY(f1);
SELECT table_name FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex';
table_name
t1_my_tablex
SELECT table_name FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex';
table_name
t1_my_tablex
DROP DATABASE db_datadict;
SELECT table_name FROM information_schema.table_constraints
WHERE table_name = 't1_my_tablex';
table_name
########################################################################
# Testcases 3.2.1.3-3.2.1.5 + 3.2.1.8-3.2.1.12: INSERT/UPDATE/DELETE and
#           DDL on INFORMATION_SCHEMA tables are not supported
########################################################################
CREATE DATABASE db_datadict;
CREATE TABLE db_datadict.t1 (f1 BIGINT, UNIQUE(f1))
ENGINE = <engine_type>;
INSERT INTO information_schema.table_constraints
(constraint_schema, constraint_name, table_name)
VALUES (          'mysql',       'primary',       'db');
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
INSERT INTO information_schema.table_constraints
SELECT * FROM information_schema.table_constraints;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
UPDATE information_schema.table_constraints
SET  table_name = 'db1' WHERE constraint_name = 'primary';
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
DELETE FROM information_schema.table_constraints WHERE table_name = 't1';
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
TRUNCATE information_schema.table_constraints;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
CREATE INDEX i3 ON information_schema.table_constraints(table_name);
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.table_constraints ADD f1 INT;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
DROP TABLE information_schema.table_constraints;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.table_constraints
RENAME db_datadict.table_constraints;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.table_constraints
RENAME information_schema.xtable_constraints;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
DROP TABLE db_datadict.t1;
DROP DATABASE db_datadict;