drop table if exists t1; Warnings: Note 1051 Unknown table 'test.t1' CREATE TABLE t1 (pk INT, d DATETIME, PRIMARY KEY(pk), KEY(d)) ENGINE=Aria; ALTER TABLE t1 DISABLE KEYS; INSERT INTO t1 VALUES (1,'2000-01-01 22:22:22'),(2,'2012-12-21 12:12:12'); INSERT INTO t1 VALUES (3, '2008-07-24'); ALTER TABLE t1 ENABLE KEYS; SELECT t1a.pk FROM t1 AS t1a LEFT JOIN t1 AS t1b ON t1a.pk = t1b.pk; pk 1 2 3 SELECT * FROM t1 AS t1a LEFT JOIN t1 AS t1b ON t1a.pk = t1b.pk; pk d pk d 1 2000-01-01 22:22:22 1 2000-01-01 22:22:22 2 2012-12-21 12:12:12 2 2012-12-21 12:12:12 3 2008-07-24 00:00:00 3 2008-07-24 00:00:00 DROP TABLE t1; CREATE TABLE t1 (pk INT PRIMARY KEY, i INT, KEY(i)) ENGINE=Aria; ALTER TABLE t1 DISABLE KEYS; INSERT INTO t1 VALUES (1,11); INSERT INTO t1 VALUES (2,0),(3,33),(4,0),(5,55),(6,66),(7,0),(8,88),(9,99); ALTER TABLE t1 ENABLE KEYS; SELECT * FROM t1 WHERE i = 0 OR pk BETWEEN 6 AND 10; pk i 2 0 4 0 6 66 7 0 8 88 9 99 DROP TABLE t1; CREATE TABLE t1 (f INT) ENGINE=Aria transactional=1; SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `f` int(11) DEFAULT NULL ) ENGINE=Aria DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1 TRANSACTIONAL=1 INSERT INTO t1 VALUES (1),(2); ALTER TABLE t1 ORDER BY unknown_column; ERROR 42S22: Unknown column 'unknown_column' in 'order clause' SHOW CREATE TABLE t1; Table Create Table t1 CREATE TABLE `t1` ( `f` int(11) DEFAULT NULL ) ENGINE=Aria DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1 TRANSACTIONAL=1 CREATE TABLE t2 SELECT * FROM t1; DROP TABLE t1, t2;