SHOW TABLES FROM information_schema LIKE 'ENGINES';
Tables_in_information_schema (ENGINES)
ENGINES
#######################################################################
# 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.ENGINES;
CREATE PROCEDURE test.p1() SELECT * FROM information_schema.ENGINES;
CREATE FUNCTION test.f1() returns BIGINT
BEGIN
DECLARE counter BIGINT DEFAULT NULL;
SELECT COUNT(*) INTO counter FROM information_schema.ENGINES;
RETURN counter;
END//
# Attention: The printing of the next result sets is disabled.
SELECT * FROM information_schema.ENGINES;
SELECT * FROM test.v1;
CALL test.p1;
SELECT test.f1();
DROP VIEW test.v1;
DROP PROCEDURE test.p1;
DROP FUNCTION test.f1;
#########################################################################
# Testcase 3.2.12.1: INFORMATION_SCHEMA.ENGINES layout
#########################################################################
DESCRIBE          information_schema.ENGINES;
Field	Type	Null	Key	Default	Extra
ENGINE	varchar(64)	NO			
SUPPORT	varchar(8)	NO			
COMMENT	varchar(80)	NO			
TRANSACTIONS	varchar(3)	NO			
XA	varchar(3)	NO			
SAVEPOINTS	varchar(3)	NO			
SHOW CREATE TABLE information_schema.ENGINES;
Table	Create Table
ENGINES	CREATE TEMPORARY TABLE `ENGINES` (
  `ENGINE` varchar(64) NOT NULL DEFAULT '',
  `SUPPORT` varchar(8) NOT NULL DEFAULT '',
  `COMMENT` varchar(80) NOT NULL DEFAULT '',
  `TRANSACTIONS` varchar(3) NOT NULL DEFAULT '',
  `XA` varchar(3) NOT NULL DEFAULT '',
  `SAVEPOINTS` varchar(3) NOT NULL DEFAULT ''
) ENGINE=MEMORY DEFAULT CHARSET=utf8
SHOW COLUMNS FROM information_schema.ENGINES;
Field	Type	Null	Key	Default	Extra
ENGINE	varchar(64)	NO			
SUPPORT	varchar(8)	NO			
COMMENT	varchar(80)	NO			
TRANSACTIONS	varchar(3)	NO			
XA	varchar(3)	NO			
SAVEPOINTS	varchar(3)	NO			
########################################################################
# 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 tables are not supported
########################################################################
DROP DATABASE IF EXISTS db_datadict;
CREATE DATABASE db_datadict;
CREATE TABLE db_datadict.t1 (f1 BIGINT)
ENGINE = <engine_type>;
INSERT INTO information_schema.engines
SELECT * FROM information_schema.engines;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
UPDATE information_schema.engines SET engine = '1234567';
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
DELETE FROM information_schema.engines WHERE support IN ('DEFAULT','YES');
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
TRUNCATE information_schema.engines;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
CREATE INDEX my_idx_on_engines ON information_schema.engines(engine);
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.engines DROP PRIMARY KEY;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.engines ADD f1 INT;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
DROP TABLE information_schema.engines;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.engines RENAME db_datadict.engines;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
ALTER TABLE information_schema.engines RENAME information_schema.xengines;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
DROP DATABASE db_datadict;