DROP TABLE IF EXISTS t1; CREATE TABLE t1 (a , b ) ENGINE= DEFAULT CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = 'standard table options' ; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` char(8) DEFAULT NULL ) ENGINE= DEFAULT CHARSET=utf8 COMMENT='standard table options' ALTER TABLE t1 COMMENT = 'table altered'; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` char(8) DEFAULT NULL ) ENGINE= DEFAULT CHARSET=utf8 COMMENT='table altered' ALTER TABLE t1 ENGINE=MEMORY; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` char(8) DEFAULT NULL ) ENGINE=MEMORY DEFAULT CHARSET=utf8 COMMENT='table altered' ALTER TABLE t1 ENGINE=; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` char(8) DEFAULT NULL ) ENGINE= DEFAULT CHARSET=utf8 COMMENT='table altered' ALTER TABLE t1 CHARACTER SET = latin1 COLLATE = latin1_swedish_ci; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` char(8) CHARACTER SET utf8 DEFAULT NULL ) ENGINE= DEFAULT CHARSET=latin1 COMMENT='table altered' DROP TABLE t1;