drop table if exists t1; SET SESSION enforce_storage_engine=MyISAM; select @@session.enforce_storage_engine; @@session.enforce_storage_engine MyISAM CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=Memory; Warnings: Note 1266 Using storage engine MyISAM for table 't1' SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `c1` int(11) NOT NULL AUTO_INCREMENT, `c2` varchar(10) DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 DROP TABLE t1; CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=MyISAM; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `c1` int(11) NOT NULL AUTO_INCREMENT, `c2` varchar(10) DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 DROP TABLE t1; CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)); SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `c1` int(11) NOT NULL AUTO_INCREMENT, `c2` varchar(10) DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 DROP TABLE t1; SET SESSION sql_mode='NO_ENGINE_SUBSTITUTION'; CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=MyISAM; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `c1` int(11) NOT NULL AUTO_INCREMENT, `c2` varchar(10) DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 INSERT INTO t1 values (1,'abba'); CREATE TABLE t2 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=Memory; ERROR 42000: Unknown storage engine 'MEMORY' SET SESSION sql_mode=''; SET SESSION enforce_storage_engine=MyISAM; select @@session.enforce_storage_engine; @@session.enforce_storage_engine MyISAM select * from t1; c1 c2 1 abba drop table t1; CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)); SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `c1` int(11) NOT NULL AUTO_INCREMENT, `c2` varchar(10) DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 DROP TABLE t1; SET SESSION enforce_storage_engine=FooBar; ERROR 42000: Unknown storage engine 'FooBar' select @@session.enforce_storage_engine; @@session.enforce_storage_engine MyISAM SET SESSION enforce_storage_engine=MyISAM; ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation SET SESSION enforce_storage_engine=NULL; SET SESSION sql_mode='NO_ENGINE_SUBSTITUTION'; CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=Memory; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `c1` int(11) NOT NULL AUTO_INCREMENT, `c2` varchar(10) DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=MEMORY DEFAULT CHARSET=latin1 DROP TABLE t1; CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)) ENGINE=MyISAM; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `c1` int(11) NOT NULL AUTO_INCREMENT, `c2` varchar(10) DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 DROP TABLE t1; CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)); SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `c1` int(11) NOT NULL AUTO_INCREMENT, `c2` varchar(10) DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 DROP TABLE t1; SET GLOBAL enforce_storage_engine=Memory; SET SESSION sql_mode=''; select @@session.enforce_storage_engine; @@session.enforce_storage_engine MEMORY select @@global.enforce_storage_engine; @@global.enforce_storage_engine MEMORY CREATE TABLE t1 (c1 INT PRIMARY KEY AUTO_INCREMENT, c2 VARCHAR(10)); Warnings: Note 1266 Using storage engine MEMORY for table 't1' SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `c1` int(11) NOT NULL AUTO_INCREMENT, `c2` varchar(10) DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=MEMORY DEFAULT CHARSET=latin1 DROP TABLE t1; SET SESSION enforce_storage_engine=NULL; SET GLOBAL enforce_storage_engine=NULL;