DROP DATABASE IF EXISTS db_datadict;
CREATE DATABASE db_datadict;
DROP   USER testuser1@localhost;
CREATE USER testuser1@localhost;
GRANT SELECT ON db_datadict.* TO testuser1@localhost;
SELECT * FROM information_schema.table_constraints
WHERE table_schema = 'mysql'
ORDER BY table_schema,table_name,constraint_name;
CONSTRAINT_CATALOG	CONSTRAINT_SCHEMA	CONSTRAINT_NAME	TABLE_SCHEMA	TABLE_NAME	CONSTRAINT_TYPE
def	mysql	PRIMARY	mysql	columns_priv	PRIMARY KEY
def	mysql	PRIMARY	mysql	column_stats	PRIMARY KEY
def	mysql	PRIMARY	mysql	db	PRIMARY KEY
def	mysql	PRIMARY	mysql	event	PRIMARY KEY
def	mysql	PRIMARY	mysql	func	PRIMARY KEY
def	mysql	PRIMARY	mysql	global_priv	PRIMARY KEY
def	mysql	Priv	mysql	global_priv	CHECK
def	mysql	PRIMARY	mysql	gtid_slave_pos	PRIMARY KEY
def	mysql	name	mysql	help_category	UNIQUE
def	mysql	PRIMARY	mysql	help_category	PRIMARY KEY
def	mysql	name	mysql	help_keyword	UNIQUE
def	mysql	PRIMARY	mysql	help_keyword	PRIMARY KEY
def	mysql	PRIMARY	mysql	help_relation	PRIMARY KEY
def	mysql	name	mysql	help_topic	UNIQUE
def	mysql	PRIMARY	mysql	help_topic	PRIMARY KEY
def	mysql	PRIMARY	mysql	index_stats	PRIMARY KEY
def	mysql	PRIMARY	mysql	innodb_index_stats	PRIMARY KEY
def	mysql	PRIMARY	mysql	innodb_table_stats	PRIMARY KEY
def	mysql	PRIMARY	mysql	plugin	PRIMARY KEY
def	mysql	PRIMARY	mysql	proc	PRIMARY KEY
def	mysql	PRIMARY	mysql	procs_priv	PRIMARY KEY
def	mysql	PRIMARY	mysql	proxies_priv	PRIMARY KEY
def	mysql	Host	mysql	roles_mapping	UNIQUE
def	mysql	PRIMARY	mysql	servers	PRIMARY KEY
def	mysql	PRIMARY	mysql	tables_priv	PRIMARY KEY
def	mysql	PRIMARY	mysql	table_stats	PRIMARY KEY
def	mysql	PRIMARY	mysql	time_zone	PRIMARY KEY
def	mysql	PRIMARY	mysql	time_zone_leap_second	PRIMARY KEY
def	mysql	PRIMARY	mysql	time_zone_name	PRIMARY KEY
def	mysql	PRIMARY	mysql	time_zone_transition	PRIMARY KEY
def	mysql	PRIMARY	mysql	time_zone_transition_type	PRIMARY KEY
def	mysql	commit_id	mysql	transaction_registry	UNIQUE
def	mysql	PRIMARY	mysql	transaction_registry	PRIMARY KEY
connect  testuser1,localhost,testuser1,,db_datadict;
SELECT * FROM information_schema.table_constraints
WHERE table_schema = 'mysql'
ORDER BY table_schema,table_name,constraint_name;
CONSTRAINT_CATALOG	CONSTRAINT_SCHEMA	CONSTRAINT_NAME	TABLE_SCHEMA	TABLE_NAME	CONSTRAINT_TYPE
connection default;
disconnect testuser1;
DROP USER testuser1@localhost;
DROP DATABASE db_datadict;