DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (ts int);
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 01:00'));
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 02:00'));
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 03:00'));
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 02:00'));
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 01:00'));
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 02:00'));
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2003-03-30 02:59:59'));
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2003-03-30 03:00:00'));
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2003-03-30 03:59:59'));
INSERT INTO t1 (ts) VALUES (Unix_timestamp('2003-03-30 04:00:01'));
SELECT ts,from_unixtime(ts) FROM t1;
ts	from_unixtime(ts)
1035673200	2002-10-27 01:00:00
1035680400	2002-10-27 02:00:00
1035684000	2002-10-27 03:00:00
1035680400	2002-10-27 02:00:00
1035673200	2002-10-27 01:00:00
1035680400	2002-10-27 02:00:00
1048986000	2003-03-30 03:00:00
1048986000	2003-03-30 03:00:00
1048989599	2003-03-30 03:59:59
1048989601	2003-03-30 04:00:01
DROP TABLE t1;