DROP TABLE IF EXISTS t1; CREATE TABLE t1 (a INT PRIMARY KEY, b CHAR(8)) ENGINE=xengine DELAY_KEY_WRITE=1; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) NOT NULL, `b` char(8) COLLATE utf8mb4_general_ci DEFAULT NULL, PRIMARY KEY (`a`) ) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci DELAY_KEY_WRITE=1 ALTER TABLE t1 DELAY_KEY_WRITE=0; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) NOT NULL, `b` char(8) COLLATE utf8mb4_general_ci DEFAULT NULL, PRIMARY KEY (`a`) ) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci DROP TABLE t1;