# # MySQL Bug#39200: optimize table does not recognize # ROW_FORMAT=COMPRESSED # CREATE TABLE t1 (a INT) ROW_FORMAT=compressed, ENGINE=MyISAM; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL ) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci ROW_FORMAT=COMPRESSED OPTIMIZE TABLE t1; Table Op Msg_type Msg_text test.t1 optimize status Table is already up to date SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL ) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci ROW_FORMAT=COMPRESSED DROP TABLE t1;