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 = 'information_schema'
ORDER BY table_schema,table_name,constraint_name;
CONSTRAINT_CATALOG	CONSTRAINT_SCHEMA	CONSTRAINT_NAME	TABLE_SCHEMA	TABLE_NAME	CONSTRAINT_TYPE
connect  testuser1,localhost,testuser1,,db_datadict;
SELECT * FROM information_schema.table_constraints
WHERE table_schema = 'information_schema'
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;