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 = <engine_type>;
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 = <engine_type>;
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 = <engine_type>;
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;