SHOW TABLES FROM information_schema LIKE 'COLUMN_PRIVILEGES';
Tables_in_information_schema (COLUMN_PRIVILEGES)
COLUMN_PRIVILEGES
#######################################################################
# 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.COLUMN_PRIVILEGES;
CREATE PROCEDURE test.p1() SELECT * FROM information_schema.COLUMN_PRIVILEGES;
CREATE FUNCTION test.f1() returns BIGINT
BEGIN
DECLARE counter BIGINT DEFAULT NULL;
SELECT COUNT(*) INTO counter FROM information_schema.COLUMN_PRIVILEGES;
RETURN counter;
END//
# Attention: The printing of the next result sets is disabled.
SELECT * FROM information_schema.COLUMN_PRIVILEGES;
SELECT * FROM test.v1;
CALL test.p1;
SELECT test.f1();
DROP VIEW test.v1;
DROP PROCEDURE test.p1;
DROP FUNCTION test.f1;
#########################################################################
# Testcase 3.2.5.1: INFORMATION_SCHEMA.COLUMN_PRIVILEGES layout
#########################################################################
DESCRIBE          information_schema.COLUMN_PRIVILEGES;
Field	Type	Null	Key	Default	Extra
GRANTEE	varchar(385)	NO		NULL	
TABLE_CATALOG	varchar(512)	NO		NULL	
TABLE_SCHEMA	varchar(64)	NO		NULL	
TABLE_NAME	varchar(64)	NO		NULL	
COLUMN_NAME	varchar(64)	NO		NULL	
PRIVILEGE_TYPE	varchar(64)	NO		NULL	
IS_GRANTABLE	varchar(3)	NO		NULL	
SHOW CREATE TABLE information_schema.COLUMN_PRIVILEGES;
Table	Create Table
COLUMN_PRIVILEGES	CREATE TEMPORARY TABLE `COLUMN_PRIVILEGES` (
  `GRANTEE` varchar(385) NOT NULL,
  `TABLE_CATALOG` varchar(512) NOT NULL,
  `TABLE_SCHEMA` varchar(64) NOT NULL,
  `TABLE_NAME` varchar(64) NOT NULL,
  `COLUMN_NAME` varchar(64) NOT NULL,
  `PRIVILEGE_TYPE` varchar(64) NOT NULL,
  `IS_GRANTABLE` varchar(3) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
SHOW COLUMNS FROM information_schema.COLUMN_PRIVILEGES;
Field	Type	Null	Key	Default	Extra
GRANTEE	varchar(385)	NO		NULL	
TABLE_CATALOG	varchar(512)	NO		NULL	
TABLE_SCHEMA	varchar(64)	NO		NULL	
TABLE_NAME	varchar(64)	NO		NULL	
COLUMN_NAME	varchar(64)	NO		NULL	
PRIVILEGE_TYPE	varchar(64)	NO		NULL	
IS_GRANTABLE	varchar(3)	NO		NULL	
SELECT table_catalog, table_schema, table_name, column_name, privilege_type
FROM information_schema.column_privileges WHERE table_catalog IS NOT NULL;
table_catalog	table_schema	table_name	column_name	privilege_type
######################################################################
# Testcase 3.2.5.2+3.2.5.3+3.2.5.4:
#          INFORMATION_SCHEMA.COLUMN_PRIVILEGES accessible information
######################################################################
DROP DATABASE IF EXISTS db_datadict;
CREATE DATABASE db_datadict;
CREATE TABLE db_datadict.t1 (f1 INT, f2 DECIMAL, f3 TEXT)
ENGINE = <other_engine_type>;
USE db_datadict;
DROP   USER 'testuser1'@'localhost';
CREATE USER 'testuser1'@'localhost';
DROP   USER 'testuser2'@'localhost';
CREATE USER 'testuser2'@'localhost';
DROP   USER 'testuser3'@'localhost';
CREATE USER 'testuser3'@'localhost';
GRANT SELECT(f1, f3) ON db_datadict.t1 TO 'testuser1'@'localhost';
GRANT INSERT(f1)     ON db_datadict.t1 TO 'testuser1'@'localhost';
GRANT UPDATE(f2)     ON db_datadict.t1 TO 'testuser1'@'localhost';
GRANT SELECT(f2)     ON db_datadict.t1 TO 'testuser2'@'localhost';
GRANT INSERT, SELECT ON db_datadict.t1 TO 'testuser3'@'localhost';
GRANT SELECT(f3)     ON db_datadict.t1 TO 'testuser3'@'localhost';
GRANT INSERT, SELECT ON db_datadict.t1 TO 'testuser3'@'localhost'
WITH GRANT OPTION;
GRANT ALL            ON db_datadict.*  TO 'testuser3'@'localhost';
SELECT * FROM information_schema.column_privileges
WHERE grantee LIKE '''testuser%'''
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	t1	f1	INSERT	NO
'testuser1'@'localhost'	def	db_datadict	t1	f1	SELECT	NO
'testuser1'@'localhost'	def	db_datadict	t1	f2	UPDATE	NO
'testuser1'@'localhost'	def	db_datadict	t1	f3	SELECT	NO
'testuser2'@'localhost'	def	db_datadict	t1	f2	SELECT	NO
'testuser3'@'localhost'	def	db_datadict	t1	f3	SELECT	YES
GRANT UPDATE(f3)     ON db_datadict.t1 TO 'testuser1'@'localhost'
WITH GRANT OPTION;
SELECT * FROM information_schema.column_privileges
WHERE grantee LIKE '''testuser%'''
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	t1	f1	INSERT	YES
'testuser1'@'localhost'	def	db_datadict	t1	f1	SELECT	YES
'testuser1'@'localhost'	def	db_datadict	t1	f2	UPDATE	YES
'testuser1'@'localhost'	def	db_datadict	t1	f3	SELECT	YES
'testuser1'@'localhost'	def	db_datadict	t1	f3	UPDATE	YES
'testuser2'@'localhost'	def	db_datadict	t1	f2	SELECT	NO
'testuser3'@'localhost'	def	db_datadict	t1	f3	SELECT	YES
connect  testuser1, localhost, testuser1, , db_datadict;
SELECT * FROM information_schema.column_privileges
WHERE grantee LIKE '''testuser%'''
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	t1	f1	INSERT	YES
'testuser1'@'localhost'	def	db_datadict	t1	f1	SELECT	YES
'testuser1'@'localhost'	def	db_datadict	t1	f2	UPDATE	YES
'testuser1'@'localhost'	def	db_datadict	t1	f3	SELECT	YES
'testuser1'@'localhost'	def	db_datadict	t1	f3	UPDATE	YES
connect  testuser2, localhost, testuser2, , db_datadict;
SELECT * FROM information_schema.column_privileges
WHERE grantee LIKE '''testuser%'''
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser2'@'localhost'	def	db_datadict	t1	f2	SELECT	NO
connect  testuser3, localhost, testuser3, , db_datadict;
# FIXME: Is it correct that granted TABLES do not occur in COLUMN_PRIVILEGES?
SELECT * FROM information_schema.table_privileges
WHERE grantee LIKE '''testuser%'''
ORDER BY grantee,table_schema,table_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser3'@'localhost'	def	db_datadict	t1	INSERT	YES
'testuser3'@'localhost'	def	db_datadict	t1	SELECT	YES
SELECT * FROM information_schema.schema_privileges
WHERE grantee LIKE '''testuser%'''
ORDER BY grantee,table_schema,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser3'@'localhost'	def	db_datadict	ALTER	NO
'testuser3'@'localhost'	def	db_datadict	ALTER ROUTINE	NO
'testuser3'@'localhost'	def	db_datadict	CREATE	NO
'testuser3'@'localhost'	def	db_datadict	CREATE ROUTINE	NO
'testuser3'@'localhost'	def	db_datadict	CREATE TEMPORARY TABLES	NO
'testuser3'@'localhost'	def	db_datadict	CREATE VIEW	NO
'testuser3'@'localhost'	def	db_datadict	DELETE	NO
'testuser3'@'localhost'	def	db_datadict	DELETE HISTORY	NO
'testuser3'@'localhost'	def	db_datadict	DROP	NO
'testuser3'@'localhost'	def	db_datadict	EVENT	NO
'testuser3'@'localhost'	def	db_datadict	EXECUTE	NO
'testuser3'@'localhost'	def	db_datadict	INDEX	NO
'testuser3'@'localhost'	def	db_datadict	INSERT	NO
'testuser3'@'localhost'	def	db_datadict	LOCK TABLES	NO
'testuser3'@'localhost'	def	db_datadict	REFERENCES	NO
'testuser3'@'localhost'	def	db_datadict	SELECT	NO
'testuser3'@'localhost'	def	db_datadict	SHOW VIEW	NO
'testuser3'@'localhost'	def	db_datadict	TRIGGER	NO
'testuser3'@'localhost'	def	db_datadict	UPDATE	NO
SELECT * FROM information_schema.column_privileges
WHERE grantee LIKE '''testuser%'''
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser3'@'localhost'	def	db_datadict	t1	f3	SELECT	YES
GRANT SELECT(f1, f3) ON db_datadict.t1 TO 'testuser2'@'localhost';
# FIXME: Is it intended that *my* grants to others are *NOT* shown here?
SELECT * FROM information_schema.column_privileges
WHERE grantee LIKE '''testuser%'''
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser3'@'localhost'	def	db_datadict	t1	f3	SELECT	YES
connection testuser2;
SELECT * FROM information_schema.column_privileges
WHERE grantee LIKE '''testuser%'''
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser2'@'localhost'	def	db_datadict	t1	f1	SELECT	NO
'testuser2'@'localhost'	def	db_datadict	t1	f2	SELECT	NO
'testuser2'@'localhost'	def	db_datadict	t1	f3	SELECT	NO
connection default;
disconnect testuser1;
disconnect testuser2;
disconnect testuser3;
DROP DATABASE db_datadict;
DROP USER 'testuser1'@'localhost';
DROP USER 'testuser2'@'localhost';
DROP USER 'testuser3'@'localhost';
################################################################################
# 3.2.1.13+3.2.1.14+3.2.1.15: INFORMATION_SCHEMA.COLUMN_PRIVILEGES modifications
################################################################################
DROP DATABASE IF EXISTS db_datadict;
CREATE DATABASE db_datadict;
CREATE TABLE db_datadict.my_table (f1 BIGINT, f2 CHAR(10), f3 DATE)
ENGINE = <engine_type>;
DROP   USER 'testuser1'@'localhost';
CREATE USER 'testuser1'@'localhost';
GRANT ALL ON test.* TO 'testuser1'@'localhost';
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
connect  testuser1, localhost, testuser1, , test;
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
connection default;
GRANT SELECT (f1,f3) ON db_datadict.my_table TO 'testuser1'@'localhost';
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	my_table	f1	SELECT	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f3	SELECT	NO
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
GRANT SELECT (f3, f1) ON `db_datadict`.`my_table` TO `testuser1`@`localhost`
connection testuser1;
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	my_table	f1	SELECT	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f3	SELECT	NO
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
GRANT SELECT (f3, f1) ON `db_datadict`.`my_table` TO `testuser1`@`localhost`
connection default;
ALTER TABLE db_datadict.my_table DROP COLUMN f3;
GRANT UPDATE (f1) ON db_datadict.my_table TO 'testuser1'@'localhost';
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	my_table	f1	SELECT	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f1	UPDATE	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f3	SELECT	NO
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
GRANT SELECT (f3, f1), UPDATE (f1) ON `db_datadict`.`my_table` TO `testuser1`@`localhost`
connection testuser1;
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	my_table	f1	SELECT	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f1	UPDATE	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f3	SELECT	NO
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
GRANT SELECT (f3, f1), UPDATE (f1) ON `db_datadict`.`my_table` TO `testuser1`@`localhost`
SELECT f1, f3 FROM db_datadict.my_table;
ERROR 42S22: Unknown column 'f3' in 'field list'
connection default;
ALTER TABLE db_datadict.my_table CHANGE COLUMN f1 my_col BIGINT;
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	my_table	f1	SELECT	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f1	UPDATE	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f3	SELECT	NO
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
GRANT SELECT (f3, f1), UPDATE (f1) ON `db_datadict`.`my_table` TO `testuser1`@`localhost`
connection testuser1;
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	my_table	f1	SELECT	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f1	UPDATE	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f3	SELECT	NO
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
GRANT SELECT (f3, f1), UPDATE (f1) ON `db_datadict`.`my_table` TO `testuser1`@`localhost`
connection default;
DROP TABLE db_datadict.my_table;
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	my_table	f1	SELECT	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f1	UPDATE	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f3	SELECT	NO
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
GRANT SELECT (f3, f1), UPDATE (f1) ON `db_datadict`.`my_table` TO `testuser1`@`localhost`
connection testuser1;
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
'testuser1'@'localhost'	def	db_datadict	my_table	f1	SELECT	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f1	UPDATE	NO
'testuser1'@'localhost'	def	db_datadict	my_table	f3	SELECT	NO
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
GRANT SELECT (f3, f1), UPDATE (f1) ON `db_datadict`.`my_table` TO `testuser1`@`localhost`
connection default;
REVOKE ALL ON db_datadict.my_table FROM 'testuser1'@'localhost';
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
connection testuser1;
SELECT * FROM information_schema.column_privileges
WHERE table_name = 'my_table'
ORDER BY grantee, table_schema,table_name,column_name,privilege_type;
GRANTEE	TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	COLUMN_NAME	PRIVILEGE_TYPE	IS_GRANTABLE
SHOW GRANTS FOR 'testuser1'@'localhost';
Grants for testuser1@localhost
GRANT USAGE ON *.* TO `testuser1`@`localhost`
GRANT ALL PRIVILEGES ON `test`.* TO `testuser1`@`localhost`
connection default;
disconnect testuser1;
DROP USER 'testuser1'@'localhost';
DROP DATABASE db_datadict;
########################################################################
# 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 table are not supported
########################################################################
DROP DATABASE IF EXISTS db_datadict;
CREATE DATABASE db_datadict;
CREATE TABLE db_datadict.t1 (f1 BIGINT, f2 BIGINT)
ENGINE = <engine_type>;
DROP   USER 'testuser1'@'localhost';
CREATE USER 'testuser1'@'localhost';
GRANT SELECT (f1) ON db_datadict.t1 TO 'testuser1'@'localhost';
INSERT INTO information_schema.column_privileges
SELECT * FROM information_schema.column_privileges;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
UPDATE information_schema.column_privileges SET table_schema = 'test'
WHERE table_name = 't1';
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
DELETE FROM information_schema.column_privileges WHERE table_name = 't1';
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
TRUNCATE information_schema.column_privileges;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
CREATE INDEX my_idx_on_tables
ON information_schema.column_privileges(table_schema);
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.column_privileges ADD f1 INT;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
DROP TABLE information_schema.column_privileges;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.column_privileges
RENAME db_datadict.column_privileges;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.column_privileges
RENAME information_schema.xcolumn_privileges;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
DROP DATABASE db_datadict;
DROP USER 'testuser1'@'localhost';