SHOW TABLES FROM information_schema LIKE 'VIEWS'; Tables_in_information_schema (VIEWS) VIEWS ####################################################################### # 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.VIEWS; CREATE PROCEDURE test.p1() SELECT * FROM information_schema.VIEWS; CREATE FUNCTION test.f1() returns BIGINT BEGIN DECLARE counter BIGINT DEFAULT NULL; SELECT COUNT(*) INTO counter FROM information_schema.VIEWS; RETURN counter; END// # Attention: The printing of the next result sets is disabled. SELECT * FROM information_schema.VIEWS; SELECT * FROM test.v1; CALL test.p1; SELECT test.f1(); DROP VIEW test.v1; DROP PROCEDURE test.p1; DROP FUNCTION test.f1; ######################################################################### # Testcase 3.2.13.1: INFORMATION_SCHEMA.VIEWS layout ######################################################################### DESCRIBE information_schema.VIEWS; Field Type Null Key Default Extra TABLE_CATALOG varchar(512) NO NULL TABLE_SCHEMA varchar(64) NO NULL TABLE_NAME varchar(64) NO NULL VIEW_DEFINITION longtext NO NULL CHECK_OPTION varchar(8) NO NULL IS_UPDATABLE varchar(3) NO NULL DEFINER varchar(384) NO NULL SECURITY_TYPE varchar(7) NO NULL CHARACTER_SET_CLIENT varchar(32) NO NULL COLLATION_CONNECTION varchar(64) NO NULL ALGORITHM varchar(10) NO NULL SHOW CREATE TABLE information_schema.VIEWS; Table Create Table VIEWS CREATE TEMPORARY TABLE `VIEWS` ( `TABLE_CATALOG` varchar(512) NOT NULL, `TABLE_SCHEMA` varchar(64) NOT NULL, `TABLE_NAME` varchar(64) NOT NULL, `VIEW_DEFINITION` longtext NOT NULL, `CHECK_OPTION` varchar(8) NOT NULL, `IS_UPDATABLE` varchar(3) NOT NULL, `DEFINER` varchar(384) NOT NULL, `SECURITY_TYPE` varchar(7) NOT NULL, `CHARACTER_SET_CLIENT` varchar(32) NOT NULL, `COLLATION_CONNECTION` varchar(64) NOT NULL, `ALGORITHM` varchar(10) NOT NULL ) DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci SHOW COLUMNS FROM information_schema.VIEWS; Field Type Null Key Default Extra TABLE_CATALOG varchar(512) NO NULL TABLE_SCHEMA varchar(64) NO NULL TABLE_NAME varchar(64) NO NULL VIEW_DEFINITION longtext NO NULL CHECK_OPTION varchar(8) NO NULL IS_UPDATABLE varchar(3) NO NULL DEFINER varchar(384) NO NULL SECURITY_TYPE varchar(7) NO NULL CHARACTER_SET_CLIENT varchar(32) NO NULL COLLATION_CONNECTION varchar(64) NO NULL ALGORITHM varchar(10) NO NULL SELECT table_catalog, table_schema, table_name FROM information_schema.views WHERE table_catalog <> 'def'; table_catalog table_schema table_name ################################################################################ # Testcase 3.2.13.2 + 3.2.13.3: INFORMATION_SCHEMA.VIEWS accessible information ################################################################################ DROP DATABASE IF EXISTS db_datadict; CREATE DATABASE db_datadict; DROP USER 'testuser1'@'localhost'; CREATE USER 'testuser1'@'localhost'; DROP USER 'testuser2'@'localhost'; CREATE USER 'testuser2'@'localhost'; DROP USER 'test_no_views'@'localhost'; CREATE USER 'test_no_views'@'localhost'; CREATE TABLE db_datadict.t1(f1 INT, f2 INT, f3 INT) ENGINE = ; CREATE VIEW db_datadict.v_granted_to_1 AS SELECT * FROM db_datadict.t1; CREATE VIEW db_datadict.v_granted_glob AS SELECT f2, f3 FROM db_datadict.t1; GRANT SELECT ON db_datadict.t1 TO 'testuser1'@'localhost'; GRANT SELECT ON db_datadict.v_granted_to_1 TO 'testuser1'@'localhost'; GRANT SHOW VIEW, CREATE VIEW ON db_datadict.* TO 'testuser2'@'localhost'; SELECT * FROM information_schema.views WHERE table_schema = 'db_datadict' ORDER BY table_name; TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION ALGORITHM def db_datadict v_granted_glob select `db_datadict`.`t1`.`f2` AS `f2`,`db_datadict`.`t1`.`f3` AS `f3` from `db_datadict`.`t1` NONE YES root@localhost DEFINER latin1 latin1_swedish_ci UNDEFINED def db_datadict v_granted_to_1 select `db_datadict`.`t1`.`f1` AS `f1`,`db_datadict`.`t1`.`f2` AS `f2`,`db_datadict`.`t1`.`f3` AS `f3` from `db_datadict`.`t1` NONE YES root@localhost DEFINER latin1 latin1_swedish_ci UNDEFINED connect testuser1, localhost, testuser1, ,"*NO-ONE*"; SELECT * FROM information_schema.views WHERE table_schema = 'db_datadict' ORDER BY table_name; TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION ALGORITHM def db_datadict v_granted_to_1 NONE YES root@localhost DEFINER latin1 latin1_swedish_ci UNDEFINED connect testuser2, localhost, testuser2, ,"*NO-ONE*"; SELECT * FROM information_schema.views WHERE table_schema = 'db_datadict' ORDER BY table_name; TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION ALGORITHM def db_datadict v_granted_glob NONE YES root@localhost DEFINER latin1 latin1_swedish_ci UNDEFINED def db_datadict v_granted_to_1 NONE YES root@localhost DEFINER latin1 latin1_swedish_ci UNDEFINED connect test_no_views, localhost, test_no_views, ,"*NO-ONE*"; SELECT * FROM information_schema.views WHERE table_schema = 'db_datadict' ORDER BY table_name; TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION ALGORITHM connection default; disconnect testuser1; disconnect testuser2; disconnect test_no_views; DROP USER 'testuser1'@'localhost'; DROP USER 'testuser2'@'localhost'; DROP USER 'test_no_views'@'localhost'; DROP DATABASE db_datadict; ######################################################################### # 3.2.1.13+3.2.1.14+3.2.1.15: INFORMATION_SCHEMA.VIEWS modifications ######################################################################### DROP TABLE IF EXISTS test.t1_my_table; DROP DATABASE IF EXISTS db_datadict; CREATE DATABASE db_datadict; CREATE TABLE test.t1_table (f1 BIGINT, f2 CHAR(10)) DEFAULT CHARACTER SET latin1 COLLATE latin1_swedish_ci ENGINE = ; DROP USER 'testuser1'@'localhost'; CREATE USER 'testuser1'@'localhost'; SELECT * FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_schema, table_name; TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION ALGORITHM CREATE VIEW test.t1_view AS SELECT DISTINCT f1 FROM test.t1_table; CREATE ALGORITHM=MERGE VIEW test.t1_view1 AS SELECT f1 FROM test.t1_table; CREATE ALGORITHM=TEMPTABLE VIEW test.t1_view2 AS SELECT f1 FROM test.t1_table; SELECT * FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_schema, table_name; TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION ALGORITHM def test t1_view select distinct `test`.`t1_table`.`f1` AS `f1` from `test`.`t1_table` NONE NO root@localhost DEFINER latin1 latin1_swedish_ci UNDEFINED def test t1_view1 select `test`.`t1_table`.`f1` AS `f1` from `test`.`t1_table` NONE YES root@localhost DEFINER latin1 latin1_swedish_ci MERGE def test t1_view2 select `test`.`t1_table`.`f1` AS `f1` from `test`.`t1_table` NONE NO root@localhost DEFINER latin1 latin1_swedish_ci TEMPTABLE DROP VIEW test.t1_view1; DROP VIEW test.t1_view2; SELECT table_name,definer FROM information_schema.views WHERE table_name = 't1_view'; table_name definer t1_view root@localhost ALTER DEFINER = 'testuser1'@'localhost' VIEW test.t1_view AS SELECT DISTINCT f1 FROM test.t1_table; SELECT table_name,definer,security_type FROM information_schema.views WHERE table_name LIKE 't1_%'; table_name definer security_type t1_view testuser1@localhost DEFINER ALTER DEFINER = 'root'@'localhost' SQL SECURITY INVOKER VIEW test.t1_view AS SELECT f1 FROM test.t1_table WITH LOCAL CHECK OPTION; SELECT table_name,definer,security_type FROM information_schema.views WHERE table_name LIKE 't1_%'; table_name definer security_type t1_view root@localhost INVOKER SELECT table_schema,table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_schema,table_name; table_schema table_name test t1_view RENAME TABLE test.t1_view TO db_datadict.t1_view; ERROR HY000: Changing schema from 'test' to 'db_datadict' is not allowed DROP VIEW test.t1_view; CREATE VIEW db_datadict.t1_view AS SELECT * FROM test.t1_table; SELECT table_schema,table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_schema,table_name; table_schema table_name db_datadict t1_view SELECT table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_name; table_name t1_view RENAME TABLE db_datadict.t1_view TO db_datadict.t1_viewx; SELECT table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_name; table_name t1_viewx SELECT table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_name; table_name t1_viewx DROP VIEW db_datadict.t1_viewx; SELECT table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_name; table_name CREATE VIEW db_datadict.t1_view AS SELECT * FROM test.t1_table; SELECT table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_name; table_name t1_view DROP TABLE test.t1_table; SELECT table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_name; table_name t1_view CREATE TABLE test.t1_table (f1 BIGINT, f2 CHAR(10)) DEFAULT CHARACTER SET latin1 COLLATE latin1_swedish_ci COMMENT = 'Initial Comment' ENGINE = ; SELECT table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_name; table_name t1_view DROP DATABASE db_datadict; SELECT table_name FROM information_schema.views WHERE table_name LIKE 't1_%' ORDER BY table_name; table_name DROP USER 'testuser1'@'localhost'; DROP TABLE test.t1_table; ######################################################################## # 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 VIEW db_datadict.v1 AS SELECT 1; INSERT INTO information_schema.views SELECT * FROM information_schema.views; ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' INSERT INTO information_schema.views(table_schema, table_name) VALUES ('db2', 'v2'); ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' UPDATE information_schema.views SET table_schema = 'test' WHERE table_name = 't1'; Got one of the listed errors DELETE FROM information_schema.views WHERE table_name = 't1'; ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' TRUNCATE information_schema.views; ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' CREATE INDEX my_idx_on_views ON information_schema.views(table_schema); ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' ALTER TABLE information_schema.views DROP PRIMARY KEY; ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' ALTER TABLE information_schema.views ADD f1 INT; ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' DROP TABLE information_schema.views; ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' ALTER TABLE information_schema.views RENAME db_datadict.views; ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' ALTER TABLE information_schema.views RENAME information_schema.xviews; ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema' DROP DATABASE db_datadict;