EVOLUTION-MANAGER

Edit File: update_delete_calendar.result

DROP TABLE IF EXISTS t1,t2; CREATE TABLE t1(c1 DATE NOT NULL PRIMARY KEY, c2 DATE NULL, c3 INT, INDEX idx2(c2)); INSERT INTO t1 VALUE('1998-01-01','10-01-01',1),('2001-01-01','70-01-01',2),('2001-01-03','2001-01-04 09:34:00',3); Warnings: Note 1265 Data truncated for column 'c2' at row 3 SELECT * FROM t1; c1 c2 c3 1998-01-01 2010-01-01 1 2001-01-01 1970-01-01 2 2001-01-03 2001-01-04 3 UPDATE t1 SET c1='69-02-02' WHERE c2='10-01-01'; SELECT year(c1),month(c1),day(c1),year(c2) FROM t1 WHERE c2='10-01-01'; year(c1) month(c1) day(c1) year(c2) 2069 2 2 2010 UPDATE t1 SET c1='1969-02-02',c2='1910-02-02' WHERE c2='10-01-01'; SELECT * FROM t1 WHERE c1='1969-02-02' AND c2='1910-02-02'; c1 c2 c3 1969-02-02 1910-02-02 1 UPDATE t1 SET c1='01-02-02',c2='2070-02-02' WHERE c2='70-01-01'; SELECT year(c1),c2 FROM t1 WHERE c1='01-02-02' AND c2='2070-02-02'; year(c1) c2 2001 2070-02-02 UPDATE t1 SET c1='2001-01-03 08:30:00',c2='2001-01-05' WHERE c2='2001-01-04'; Warnings: Note 1265 Data truncated for column 'c1' at row 1 SELECT c1,hour(c1),minute(c1),second(c1) FROM t1 WHERE c2='2001-01-05'; c1 hour(c1) minute(c1) second(c1) 2001-01-03 0 0 0 INSERT INTO t1 VALUES('2009-02-25','09-02-27',4); SET TIMESTAMP=1235553613; UPDATE t1 SET c2=NOW() WHERE c1 >=CURDATE(); Warnings: Note 1265 Data truncated for column 'c2' at row 1 UPDATE t1 SET c1=DATE_ADD(CURDATE(),INTERVAL '1 1:1:1' DAY_SECOND) WHERE c2=CURDATE(); Warnings: Note 1265 Data truncated for column 'c1' at row 1 SELECT * FROM t1; c1 c2 c3 1969-02-02 1910-02-02 1 2001-01-03 2001-01-05 3 2001-02-02 2070-02-02 2 2009-02-26 2009-02-25 4 INSERT INTO t1 VALUES('2001-01-06','2001-01-07',5),('2001-01-08',NULL,6); UPDATE t1 SET c2=NULL WHERE c1='2001-01-06'; SELECT * FROM t1 WHERE c2 IS NULL; c1 c2 c3 2001-01-06 NULL 5 2001-01-08 NULL 6 UPDATE t1 SET c2='2001-01-10' WHERE c2 IS NULL; SELECT * FROM t1 WHERE c2='2001-01-10'; c1 c2 c3 2001-01-06 2001-01-10 5 2001-01-08 2001-01-10 6 INSERT INTO t1 VALUES('2001-01-11','2001-01-11',7),('2001-01-12','2001-01-12',8),('2001-01-13','2001-01-13',9),('2001-01-14','2001-01-14',10),('2001-01-15','2001-01-15',11),('2001-01-16','2001-01-16',12); UPDATE t1 SET c1='10:45:15',c2='2009-01-32' WHERE c1='2001-01-11'; Warnings: Warning 1265 Data truncated for column 'c1' at row 1 Warning 1265 Data truncated for column 'c2' at row 1 UPDATE t1 SET c2='2009-02-30' WHERE c2='2001-01-12'; Warnings: Warning 1265 Data truncated for column 'c2' at row 1 UPDATE t1 SET c2='2009-04-31' WHERE c2='2001-01-13'; Warnings: Warning 1265 Data truncated for column 'c2' at row 1 UPDATE t1 SET c2='2009-06-31' WHERE c2='2001-01-14'; Warnings: Warning 1265 Data truncated for column 'c2' at row 1 UPDATE t1 SET c2='2009-09-31' WHERE c2='2001-01-15'; Warnings: Warning 1265 Data truncated for column 'c2' at row 1 SELECT count(*) FROM t1 WHERE c2='10:45:15' OR c2='2009-01-32' OR c2='2009-02-30' OR c2='2009-04-31' OR c2='2009-06-31' OR c2='2009-09-31' /* returns 0 */; count(*) 0 UPDATE t1 SET c2='2009-11-31' WHERE c2='2001-01-16'; Warnings: Warning 1265 Data truncated for column 'c2' at row 1 SELECT * FROM t1 WHERE c2='0000-00-00'; c1 c2 c3 0000-00-00 0000-00-00 7 2001-01-12 0000-00-00 8 2001-01-13 0000-00-00 9 2001-01-14 0000-00-00 10 2001-01-15 0000-00-00 11 2001-01-16 0000-00-00 12 SET SQL_MODE=ALLOW_INVALID_DATES; INSERT INTO t1 VALUES('2001-01-27','2001-01-28',19); UPDATE t1 SET c1='2009-04-31',c2='2009-02-30' WHERE c3=19; SELECT c1,c2,day(c1),day(c2) FROM t1 WHERE c3=19; c1 c2 day(c1) day(c2) 2009-04-31 2009-02-30 31 30 SET SQL_MODE=DEFAULT; INSERT INTO t1 VALUES('2001-01-17','0000-00-00',13),('2001-01-18','2001-01-18',14); SET SQL_MODE=TRADITIONAL; SELECT * FROM t1 WHERE c2='0000-00-00'; c1 c2 c3 0000-00-00 0000-00-00 7 2001-01-12 0000-00-00 8 2001-01-13 0000-00-00 9 2001-01-14 0000-00-00 10 2001-01-15 0000-00-00 11 2001-01-16 0000-00-00 12 2001-01-17 0000-00-00 13 Warnings: Warning 1264 Out of range value for column 'c2' at row 1 UPDATE t1 SET c2='0000-00-00' WHERE c2='2001-01-18'; ERROR 22007: Incorrect date value: '0000-00-00' for column 'c2' at row 1 SET SQL_MODE=DEFAULT; UPDATE t1 SET c2='0000-00-00' WHERE c2='2001-01-18'; UPDATE t1 SET c2='2001-01-18' WHERE c2='0000-00-00' AND c1='2001-01-17'; SELECT * FROM t1 WHERE c1='0000-00-00' OR c2='0000-00-00'; c1 c2 c3 0000-00-00 0000-00-00 7 2001-01-12 0000-00-00 8 2001-01-13 0000-00-00 9 2001-01-14 0000-00-00 10 2001-01-15 0000-00-00 11 2001-01-16 0000-00-00 12 2001-01-18 0000-00-00 14 INSERT INTO t1 VALUES('2001-01-19','2001-01-20',15); UPDATE t1 SET c1='2010-00-01',c2='2010-10-00' WHERE c3=15; SELECT *,month(c1),day(c2) from t1 WHERE c3=15; c1 c2 c3 month(c1) day(c2) 2010-00-01 2010-10-00 15 0 0 INSERT INTO t1 VALUES('2001-01-21','2001-01-22',16); UPDATE t1 SET c1='1000-01-01',c2='9999-12-31' WHERE c1='2001-01-21'; SELECT * FROM t1 WHERE c1='1000-01-01' AND c2='9999-12-31'; c1 c2 c3 1000-01-01 9999-12-31 16 INSERT INTO t1 VALUES('2001-01-23','2001-01-24',17),('2001-01-25','2001-01-26',18); UPDATE t1 SET c1='2001-01-23' WHERE c1='2001-01-25'; ERROR 23000: Duplicate entry '2001-01-23' for key 'PRIMARY' UPDATE IGNORE t1 SET c1='2001-01-23' WHERE c1='2001-01-25'; SELECT count(*) FROM t1 WHERE c1='2001-01-23'; count(*) 1 UPDATE t1 SET c1=NULL WHERE c2='2001-01-24' /* updates to 0000-00-00 */; ERROR 23000: Duplicate entry '0000-00-00' for key 'PRIMARY' UPDATE IGNORE t1 SET c1=NULL WHERE c2='2001-01-24'; Warnings: Warning 1048 Column 'c1' cannot be null SELECT * FROM t1 WHERE c1='0000-00-00'; c1 c2 c3 0000-00-00 0000-00-00 7 TRUNCATE TABLE t1; CREATE TABLE t2(c1 DATE NOT NULL PRIMARY KEY, c2 DATE, c3 INT); INSERT INTO t1 VALUES('2001-01-02','2001-01-01',1),('2001-01-03','2001-01-02',2); INSERT INTO t2 VALUES('2001-01-02','2001-01-03',1),('2001-01-04','2001-01-05',2); SELECT * FROM t1,t2 WHERE t2.c1=t1.c1; c1 c2 c3 c1 c2 c3 2001-01-02 2001-01-01 1 2001-01-02 2001-01-03 1 UPDATE t1,t2 SET t2.c1='2005-01-06',t1.c1='2005-01-06' WHERE t2.c1=t1.c1; SELECT * FROM t1,t2 WHERE t2.c1=t1.c1; c1 c2 c3 c1 c2 c3 2005-01-06 2001-01-01 1 2005-01-06 2001-01-03 1 INSERT INTO t1 VALUES('2002-01-01','2002-01-02',3),('2002-01-04','2002-01-02',4); INSERT INTO t2 VALUES('2002-01-02','2002-01-03',3),('2002-01-03','2002-01-04',4); SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2002-01-01 2002-01-02 3 2002-01-02 2002-01-03 3 2002-01-04 2002-01-02 4 2002-01-02 2002-01-03 3 UPDATE t1,t2 SET t2.c1='2002-01-06',t1.c2='2002-01-06' WHERE t2.c1=t1.c2; SELECT * FROM t1,t2 WHERE t2.c1='2002-01-06' AND t1.c2='2002-01-06'; c1 c2 c3 c1 c2 c3 2002-01-01 2002-01-06 3 2002-01-06 2002-01-03 3 2002-01-04 2002-01-06 4 2002-01-06 2002-01-03 3 SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2002-01-01 2002-01-06 3 2002-01-06 2002-01-03 3 2002-01-04 2002-01-06 4 2002-01-06 2002-01-03 3 DELETE FROM t1 WHERE c2='2002-01-06' AND c3=3; SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2002-01-04 2002-01-06 4 2002-01-06 2002-01-03 3 DROP TABLE t2; TRUNCATE TABLE t1; ALTER TABLE t1 CHANGE c1 c1 DATE NOT NULL, DROP PRIMARY KEY; ALTER TABLE t1 CHANGE c1 c1 DATE NOT NULL, ADD KEY(c1); UPDATE t1 SET c1='2002-01-07' WHERE c2='2002-01-05'; SELECT * FROM t1 WHERE c1='2002-01-07'; c1 c2 c3 INSERT INTO t1 VALUES('2002-01-08','2002-01-09',4),('2002-01-10','2002-01-11',5),('2002-01-12','2002-01-13',6),('2002-01-14','2002-01-15',7),('2002-01-16','2002-01-17',8),('2002-01-18','2002-01-19',9),('2002-01-20','2002-01-21',10),('2002-01-22','2002-01-23',11),('2002-01-24','2002-01-25',12),('2002-01-26','2002-01-27',13),('2002-01-28','2002-01-29',14),('2002-01-30','2002-01-31',15),('2002-02-01','2002-02-02',16),('2002-02-03','2002-02-04',17),('2002-02-05','2002-02-06',18),('2002-02-07','2002-02-08',19),('2002-02-09','2002-02-10',20); SELECT * FROM t1; c1 c2 c3 2002-01-08 2002-01-09 4 2002-01-10 2002-01-11 5 2002-01-12 2002-01-13 6 2002-01-14 2002-01-15 7 2002-01-16 2002-01-17 8 2002-01-18 2002-01-19 9 2002-01-20 2002-01-21 10 2002-01-22 2002-01-23 11 2002-01-24 2002-01-25 12 2002-01-26 2002-01-27 13 2002-01-28 2002-01-29 14 2002-01-30 2002-01-31 15 2002-02-01 2002-02-02 16 2002-02-03 2002-02-04 17 2002-02-05 2002-02-06 18 2002-02-07 2002-02-08 19 2002-02-09 2002-02-10 20 UPDATE t1 SET c1='2003-01-01' WHERE c2 <> '2002-01-09' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 <> '2002-01-09' ORDER BY c2; c1 c2 c3 2003-01-01 2002-01-11 5 2003-01-01 2002-01-13 6 2002-01-14 2002-01-15 7 2002-01-16 2002-01-17 8 2002-01-18 2002-01-19 9 2002-01-20 2002-01-21 10 2002-01-22 2002-01-23 11 2002-01-24 2002-01-25 12 2002-01-26 2002-01-27 13 2002-01-28 2002-01-29 14 2002-01-30 2002-01-31 15 2002-02-01 2002-02-02 16 2002-02-03 2002-02-04 17 2002-02-05 2002-02-06 18 2002-02-07 2002-02-08 19 2002-02-09 2002-02-10 20 UPDATE t1 SET c1='2003-01-01' WHERE c2 >= '2002-01-13' ORDER BY c2 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 >= '2002-01-13' ORDER BY c2 DESC; c1 c2 c3 2003-01-01 2002-02-10 20 2003-01-01 2002-02-08 19 2002-02-05 2002-02-06 18 2002-02-03 2002-02-04 17 2002-02-01 2002-02-02 16 2002-01-30 2002-01-31 15 2002-01-28 2002-01-29 14 2002-01-26 2002-01-27 13 2002-01-24 2002-01-25 12 2002-01-22 2002-01-23 11 2002-01-20 2002-01-21 10 2002-01-18 2002-01-19 9 2002-01-16 2002-01-17 8 2002-01-14 2002-01-15 7 2003-01-01 2002-01-13 6 UPDATE t1 SET c1='2003-01-01' WHERE c2 <='2002-01-21' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 <='2002-01-21' ORDER BY c2; c1 c2 c3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 2003-01-01 2002-01-13 6 2002-01-14 2002-01-15 7 2002-01-16 2002-01-17 8 2002-01-18 2002-01-19 9 2002-01-20 2002-01-21 10 UPDATE t1 SET c1='2003-01-01' WHERE c2 <=> '2002-01-23' ORDER BY c2 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 <=> '2002-01-23' ORDER BY c2 DESC; c1 c2 c3 2003-01-01 2002-01-23 11 UPDATE t1 SET c1='2003-01-01' WHERE c2 BETWEEN '2002-01-25' AND '2002-01-29' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 BETWEEN '2002-01-25' AND '2002-01-29' ORDER BY c2; c1 c2 c3 2003-01-01 2002-01-25 12 2003-01-01 2002-01-27 13 2002-01-28 2002-01-29 14 UPDATE t1 SET c1='2003-01-01' WHERE c2 IN('2002-01-29','2002-01-31') ORDER BY c2 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 IN('2002-01-29','2002-01-31') ORDER BY c2 DESC; c1 c2 c3 2003-01-01 2002-01-31 15 2003-01-01 2002-01-29 14 UPDATE t1 SET c1='2003-01-01' WHERE c2 IS NULL ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2; c1 c2 c3 UPDATE t1 SET c1='2003-01-01' WHERE c2>= '2002-02-06' AND c1 < '2002-02-09' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2>= '2002-02-06' AND c1 < '2002-02-09' ORDER BY c2; c1 c2 c3 INSERT INTO t1 VALUES('2002-03-01','2002-03-01',1),('2002-03-03','2002-03-04',2),('2002-03-05','2002-03-06',3),('2005-01-01','2005-01-02',4),('2005-01-03','2005-01-04',5),('2005-01-05','2005-01-06',6),('2005-01-07','2005-01-08',7),('2005-01-09',NULL,8); SELECT * FROM t1; c1 c2 c3 2002-01-14 2002-01-15 7 2002-01-16 2002-01-17 8 2002-01-18 2002-01-19 9 2002-01-20 2002-01-21 10 2002-02-01 2002-02-02 16 2002-02-03 2002-02-04 17 2002-03-01 2002-03-01 1 2002-03-03 2002-03-04 2 2002-03-05 2002-03-06 3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 2003-01-01 2002-01-13 6 2003-01-01 2002-01-23 11 2003-01-01 2002-01-25 12 2003-01-01 2002-01-27 13 2003-01-01 2002-01-29 14 2003-01-01 2002-01-31 15 2003-01-01 2002-02-06 18 2003-01-01 2002-02-08 19 2003-01-01 2002-02-10 20 2005-01-01 2005-01-02 4 2005-01-03 2005-01-04 5 2005-01-05 2005-01-06 6 2005-01-07 2005-01-08 7 2005-01-09 NULL 8 SELECT c1 FROM t1; c1 2002-01-14 2002-01-16 2002-01-18 2002-01-20 2002-02-01 2002-02-03 2002-03-01 2002-03-03 2002-03-05 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2005-01-01 2005-01-03 2005-01-05 2005-01-07 2005-01-09 SELECT c1 FROM t1 ORDER BY c1 DESC; c1 2005-01-09 2005-01-07 2005-01-05 2005-01-03 2005-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2003-01-01 2002-03-05 2002-03-03 2002-03-01 2002-02-03 2002-02-01 2002-01-20 2002-01-18 2002-01-16 2002-01-14 SELECT * FROM t1 WHERE c1='2003-01-01'; c1 c2 c3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 2003-01-01 2002-01-13 6 2003-01-01 2002-01-23 11 2003-01-01 2002-01-25 12 2003-01-01 2002-01-27 13 2003-01-01 2002-01-29 14 2003-01-01 2002-01-31 15 2003-01-01 2002-02-06 18 2003-01-01 2002-02-08 19 2003-01-01 2002-02-10 20 SELECT * FROM t1 WHERE c1 <> '2003-01-01' ORDER BY c1,c2 LIMIT 2; c1 c2 c3 2002-01-14 2002-01-15 7 2002-01-16 2002-01-17 8 SELECT * FROM t1 WHERE c1 <> '2003-01-01' ORDER BY c1,c2 DESC; c1 c2 c3 2002-01-14 2002-01-15 7 2002-01-16 2002-01-17 8 2002-01-18 2002-01-19 9 2002-01-20 2002-01-21 10 2002-02-01 2002-02-02 16 2002-02-03 2002-02-04 17 2002-03-01 2002-03-01 1 2002-03-03 2002-03-04 2 2002-03-05 2002-03-06 3 2005-01-01 2005-01-02 4 2005-01-03 2005-01-04 5 2005-01-05 2005-01-06 6 2005-01-07 2005-01-08 7 2005-01-09 NULL 8 SELECT * FROM t1 WHERE c1 > '2003-01-01' ORDER BY c1,c2 DESC LIMIT 2; c1 c2 c3 2005-01-01 2005-01-02 4 2005-01-03 2005-01-04 5 SELECT * FROM t1 WHERE c1 >= '2003-01-01' ORDER BY c1,c2; c1 c2 c3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 2003-01-01 2002-01-13 6 2003-01-01 2002-01-23 11 2003-01-01 2002-01-25 12 2003-01-01 2002-01-27 13 2003-01-01 2002-01-29 14 2003-01-01 2002-01-31 15 2003-01-01 2002-02-06 18 2003-01-01 2002-02-08 19 2003-01-01 2002-02-10 20 2005-01-01 2005-01-02 4 2005-01-03 2005-01-04 5 2005-01-05 2005-01-06 6 2005-01-07 2005-01-08 7 2005-01-09 NULL 8 SELECT * FROM t1 WHERE c1 < '2003-01-01' ORDER BY c1,c2 LIMIT 2; c1 c2 c3 2002-01-14 2002-01-15 7 2002-01-16 2002-01-17 8 SELECT * FROM t1 WHERE c1 <= '2003-01-01' ORDER BY c1,c2 DESC; c1 c2 c3 2002-01-14 2002-01-15 7 2002-01-16 2002-01-17 8 2002-01-18 2002-01-19 9 2002-01-20 2002-01-21 10 2002-02-01 2002-02-02 16 2002-02-03 2002-02-04 17 2002-03-01 2002-03-01 1 2002-03-03 2002-03-04 2 2002-03-05 2002-03-06 3 2003-01-01 2002-02-10 20 2003-01-01 2002-02-08 19 2003-01-01 2002-02-06 18 2003-01-01 2002-01-31 15 2003-01-01 2002-01-29 14 2003-01-01 2002-01-27 13 2003-01-01 2002-01-25 12 2003-01-01 2002-01-23 11 2003-01-01 2002-01-13 6 2003-01-01 2002-01-11 5 2003-01-01 2002-01-09 4 SELECT * FROM t1 WHERE c1 <=> '2003-01-01' ORDER BY c1,c2 DESC LIMIT 2; c1 c2 c3 2003-01-01 2002-02-10 20 2003-01-01 2002-02-08 19 SELECT * FROM t1 WHERE c1 <=> '2003-01-01' ORDER BY c1,c2; c1 c2 c3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 2003-01-01 2002-01-13 6 2003-01-01 2002-01-23 11 2003-01-01 2002-01-25 12 2003-01-01 2002-01-27 13 2003-01-01 2002-01-29 14 2003-01-01 2002-01-31 15 2003-01-01 2002-02-06 18 2003-01-01 2002-02-08 19 2003-01-01 2002-02-10 20 SELECT * FROM t1 WHERE c1 BETWEEN '2002-03-01' AND '2003-01-01' ORDER BY c1,c2 LIMIT 2; c1 c2 c3 2002-03-01 2002-03-01 1 2002-03-03 2002-03-04 2 SELECT * FROM t1 WHERE c1 BETWEEN '2002-03-01' AND '2003-01-01' ORDER BY c1,c2 DESC; c1 c2 c3 2002-03-01 2002-03-01 1 2002-03-03 2002-03-04 2 2002-03-05 2002-03-06 3 2003-01-01 2002-02-10 20 2003-01-01 2002-02-08 19 2003-01-01 2002-02-06 18 2003-01-01 2002-01-31 15 2003-01-01 2002-01-29 14 2003-01-01 2002-01-27 13 2003-01-01 2002-01-25 12 2003-01-01 2002-01-23 11 2003-01-01 2002-01-13 6 2003-01-01 2002-01-11 5 2003-01-01 2002-01-09 4 SELECT * FROM t1 WHERE c1 IN('2003-01-01','2005-01-07') ORDER BY c1,c2 DESC LIMIT 2; c1 c2 c3 2003-01-01 2002-02-10 20 2003-01-01 2002-02-08 19 SELECT * FROM t1 WHERE c1 IN('2003-01-01','2005-01-07') ORDER BY c1,c2; c1 c2 c3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 2003-01-01 2002-01-13 6 2003-01-01 2002-01-23 11 2003-01-01 2002-01-25 12 2003-01-01 2002-01-27 13 2003-01-01 2002-01-29 14 2003-01-01 2002-01-31 15 2003-01-01 2002-02-06 18 2003-01-01 2002-02-08 19 2003-01-01 2002-02-10 20 2005-01-07 2005-01-08 7 SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1 LIMIT 2; c1 c2 c3 2005-01-09 NULL 8 SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1 DESC; c1 c2 c3 2005-01-09 NULL 8 SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC LIMIT 2; c1 c2 c3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1; c1 c2 c3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 2003-01-01 2002-01-13 6 2002-01-14 2002-01-15 7 2002-01-16 2002-01-17 8 2002-01-18 2002-01-19 9 2002-01-20 2002-01-21 10 2003-01-01 2002-01-23 11 2003-01-01 2002-01-25 12 2003-01-01 2002-01-27 13 2003-01-01 2002-01-29 14 2003-01-01 2002-01-31 15 2002-02-01 2002-02-02 16 2002-02-03 2002-02-04 17 2003-01-01 2002-02-06 18 2003-01-01 2002-02-08 19 2003-01-01 2002-02-10 20 2002-03-01 2002-03-01 1 2002-03-03 2002-03-04 2 2002-03-05 2002-03-06 3 2005-01-01 2005-01-02 4 2005-01-03 2005-01-04 5 2005-01-05 2005-01-06 6 2005-01-07 2005-01-08 7 SELECT * FROM t1 WHERE c1>='2003-01-01' AND c1 <= '2005-01-07' ORDER BY c2,c1 DESC LIMIT 2; c1 c2 c3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 SELECT * FROM t1 WHERE c1>='2003-01-01' AND c1 <= '2005-01-07' ORDER BY c2,c1; c1 c2 c3 2003-01-01 2002-01-09 4 2003-01-01 2002-01-11 5 2003-01-01 2002-01-13 6 2003-01-01 2002-01-23 11 2003-01-01 2002-01-25 12 2003-01-01 2002-01-27 13 2003-01-01 2002-01-29 14 2003-01-01 2002-01-31 15 2003-01-01 2002-02-06 18 2003-01-01 2002-02-08 19 2003-01-01 2002-02-10 20 2005-01-01 2005-01-02 4 2005-01-03 2005-01-04 5 2005-01-05 2005-01-06 6 2005-01-07 2005-01-08 7 SELECT * FROM t1 WHERE c1='2003-01-03' OR c2='2002-03-06'; c1 c2 c3 2002-03-05 2002-03-06 3 UPDATE t1 SET c1='2006-01-01' WHERE c1='2003-01-03' OR c2='2002-03-06'; SELECT * FROM t1 WHERE c1='2006-01-01' OR c2='2002-03-04'; c1 c2 c3 2002-03-03 2002-03-04 2 2006-01-01 2002-03-06 3 TRUNCATE TABLE t1; ALTER TABLE t1 CHANGE c1 c1 DATE NOT NULL, ADD PRIMARY KEY(c1); INSERT INTO t1 VALUES(NOW(),NOW(),3),(ADDTIME(NOW(),'1 01:01:01'),ADDTIME(NOW(),'1 01:01:01'),4),(ADDTIME(NOW(),'2 01:01:01'),ADDTIME(NOW(),'2 01:01:01'),5),(ADDTIME(NOW(),'3 01:01:01'),ADDTIME(NOW(),'3 01:01:01'),6); Warnings: Note 1265 Data truncated for column 'c1' at row 1 Note 1265 Data truncated for column 'c2' at row 1 Note 1265 Data truncated for column 'c1' at row 2 Note 1265 Data truncated for column 'c2' at row 2 Note 1265 Data truncated for column 'c1' at row 3 Note 1265 Data truncated for column 'c2' at row 3 Note 1265 Data truncated for column 'c1' at row 4 Note 1265 Data truncated for column 'c2' at row 4 INSERT INTO t1 VALUES('1000-01-01','1000-01-01',1),('9999-12-31','9999-12-31',2); SELECT * FROM t1 WHERE c1 <='1000-01-01'; c1 c2 c3 1000-01-01 1000-01-01 1 DELETE FROM t1 WHERE c1 <='1000-01-01'; SELECT * FROM t1 WHERE c1 <='1000-01-01'; c1 c2 c3 SELECT * FROM t1 WHERE c1 >='9999-12-31'; c1 c2 c3 9999-12-31 9999-12-31 2 DELETE FROM t1 WHERE c1 >='9999-12-31'; SELECT * FROM t1 WHERE c1 >='9999-12-31'; c1 c2 c3 SELECT * FROM t1 WHERE c1 > ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 2009-02-28 2009-02-28 6 2009-02-27 2009-02-27 5 DELETE FROM t1 WHERE c1 > ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC LIMIT 2; SELECT * FROM t1 WHERE c1 > ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 SELECT * FROM t1 WHERE c1 <> CURDATE() ORDER BY c1; c1 c2 c3 2009-02-26 2009-02-26 4 DELETE FROM t1 WHERE c1 <> CURDATE() ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1 <> CURDATE() ORDER BY c1; c1 c2 c3 INSERT INTO t1 VALUES('2001-01-01',NOW(),7),(ADDTIME(NOW(),'1 01:01:01'),ADDTIME(NOW(),'1 01:01:01'),8),(ADDTIME(NOW(),'2 01:01:01'),ADDTIME(NOW(),'2 01:01:01'),9),(ADDTIME(NOW(),'3 01:01:01'),ADDTIME(NOW(),'3 01:01:01'),10); Warnings: Note 1265 Data truncated for column 'c2' at row 1 Note 1265 Data truncated for column 'c1' at row 2 Note 1265 Data truncated for column 'c2' at row 2 Note 1265 Data truncated for column 'c1' at row 3 Note 1265 Data truncated for column 'c2' at row 3 Note 1265 Data truncated for column 'c1' at row 4 Note 1265 Data truncated for column 'c2' at row 4 SELECT * FROM t1 WHERE c1 < ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 2001-01-01 2009-02-25 7 2009-02-25 2009-02-25 3 2009-02-26 2009-02-26 8 2009-02-27 2009-02-27 9 DELETE FROM t1 WHERE c1 < ADDTIME(NOW(),'2 01:01:01') ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1 < ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 2009-02-26 2009-02-26 8 2009-02-27 2009-02-27 9 SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 DELETE FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 SELECT * FROM t1 WHERE c1 <=> ADDDATE(CURDATE(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 2009-02-26 2009-02-26 8 Warnings: Warning 1292 Truncated incorrect INTEGER value: '1 01:01:01' Warning 1292 Truncated incorrect INTEGER value: '1 01:01:01' DELETE FROM t1 WHERE c1 <=> ADDDATE(CURDATE(),'1 01:01:01') ORDER BY c1 DESC; Warnings: Warning 1292 Truncated incorrect INTEGER value: '1 01:01:01' SELECT * FROM t1 WHERE c1 <=> ADDDATE(CURDATE(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 Warnings: Warning 1292 Truncated incorrect INTEGER value: '1 01:01:01' INSERT INTO t1 VALUES('2001-01-01',NOW(),11),(ADDTIME(NOW(),'1 01:01:01'),ADDTIME(NOW(),'1 01:01:01'),12),(ADDTIME(NOW(),'4 01:01:01'),NULL,13),(ADDTIME(NOW(),'5 01:01:01'),NULL,14); Warnings: Note 1265 Data truncated for column 'c2' at row 1 Note 1265 Data truncated for column 'c1' at row 2 Note 1265 Data truncated for column 'c2' at row 2 Note 1265 Data truncated for column 'c1' at row 3 Note 1265 Data truncated for column 'c1' at row 4 SELECT * FROM t1 WHERE c1 BETWEEN CURDATE() AND ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 2009-02-26 2009-02-26 12 2009-02-27 2009-02-27 9 DELETE FROM t1 WHERE c1 BETWEEN CURDATE() AND ADDTIME(NOW(),'2 01:01:01') ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1 BETWEEN CURDATE() AND ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 SELECT * FROM t1 WHERE c1 IN(CURDATE(),ADDDATE(CURDATE(),'3 01:01:01')) ORDER BY c1 DESC; c1 c2 c3 2009-02-28 2009-02-28 10 Warnings: Warning 1292 Truncated incorrect INTEGER value: '3 01:01:01' DELETE FROM t1 WHERE c1 IN(CURDATE(),ADDDATE(CURDATE(),'3 01:01:01')) ORDER BY c1 DESC LIMIT 2; Warnings: Warning 1292 Truncated incorrect INTEGER value: '3 01:01:01' SELECT * FROM t1 WHERE c1 IN(CURDATE(),ADDDATE(CURDATE(),'3 01:01:01')) ORDER BY c1 DESC; c1 c2 c3 Warnings: Warning 1292 Truncated incorrect INTEGER value: '3 01:01:01' SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1; c1 c2 c3 2009-03-01 NULL 13 2009-03-02 NULL 14 DELETE FROM t1 WHERE c2 IS NULL ORDER BY c2,c1 LIMIT 2; SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1; c1 c2 c3 INSERT INTO t1 VALUES(ADDTIME(NOW(),'6 01:01:01'),ADDTIME(NOW(),'6 01:01:01'),15),(ADDTIME(NOW(),'7 01:01:01'),NULL,16),(ADDTIME(NOW(),'8 01:01:01'),ADDTIME(NOW(),'8 01:01:01'),17),(ADDTIME(NOW(),'9 01:01:01'),ADDTIME(NOW(),'9 01:01:01'),18),(ADDTIME(NOW(),'10 01:01:01'),ADDTIME(NOW(),'10 01:01:01'),19); Warnings: Note 1265 Data truncated for column 'c1' at row 1 Note 1265 Data truncated for column 'c2' at row 1 Note 1265 Data truncated for column 'c1' at row 2 Note 1265 Data truncated for column 'c1' at row 3 Note 1265 Data truncated for column 'c2' at row 3 Note 1265 Data truncated for column 'c1' at row 4 Note 1265 Data truncated for column 'c2' at row 4 Note 1265 Data truncated for column 'c1' at row 5 Note 1265 Data truncated for column 'c2' at row 5 SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC; c1 c2 c3 2001-01-01 2009-02-25 11 2009-03-03 2009-03-03 15 2009-03-05 2009-03-05 17 2009-03-06 2009-03-06 18 2009-03-07 2009-03-07 19 DELETE FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC; c1 c2 c3 2009-03-05 2009-03-05 17 2009-03-06 2009-03-06 18 2009-03-07 2009-03-07 19 SELECT * FROM t1 WHERE c1>=ADDTIME(NOW(),'5 01:01:01') AND c2 < ADDTIME(NOW(),'8 01:01:01') ORDER BY c1; c1 c2 c3 2009-03-05 2009-03-05 17 DELETE FROM t1 WHERE c1>=ADDTIME(NOW(),'5 01:01:01') AND c2 < ADDTIME(NOW(),'8 01:01:01') ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1>=ADDTIME(NOW(),'5 01:01:01') AND c2 < ADDTIME(NOW(),'8 01:01:01') ORDER BY c1; c1 c2 c3 SELECT * FROM t1 WHERE c1=ADDDATE(CURDATE(),'9 01:01:01') OR c2=ADDDATE(CURDATE(),'10 01:01:01'); c1 c2 c3 2009-03-06 2009-03-06 18 2009-03-07 2009-03-07 19 Warning 1292 Truncated incorrect INTEGER value: '10 01:01:01' Warning 1292 Truncated incorrect INTEGER value: '9 01:01:01' Warnings: DELETE FROM t1 WHERE c1=ADDDATE(CURDATE(),'9 01:01:01') OR c2=ADDDATE(CURDATE(),'10 01:01:01'); Warnings: Warning 1292 Truncated incorrect INTEGER value: '9 01:01:01' Warning 1292 Truncated incorrect INTEGER value: '10 01:01:01' SELECT * FROM t1 WHERE c1=ADDDATE(CURDATE(),'9 01:01:01') OR c2=ADDDATE(CURDATE(),'10 01:01:01'); c1 c2 c3 SELECT count(*) FROM t1; count(*) 1 TRUNCATE TABLE t1; SELECT count(*) FROM t1; count(*) 0 CREATE TABLE t2(c1 DATE NOT NULL PRIMARY KEY, c2 DATE, c3 INT); INSERT INTO t1 VALUES('2001-01-02','2001-01-01',1),('2001-01-03','2001-01-02',2); INSERT INTO t2 VALUES('2001-01-02','2001-01-03',1),('2001-01-04','2001-01-05',2); SELECT * FROM t1,t2 WHERE t2.c1=t1.c1; c1 c2 c3 c1 c2 c3 2001-01-02 2001-01-01 1 2001-01-02 2001-01-03 1 DELETE t1,t2 FROM t1,t2 WHERE t2.c1=t1.c1; SELECT * FROM t1,t2 WHERE t2.c1=t1.c1; c1 c2 c3 c1 c2 c3 TRUNCATE TABLE t1; TRUNCATE TABLE t2; INSERT INTO t1 VALUES('2001-01-01','2001-01-02',1),('2001-01-03','2001-01-02',2); INSERT INTO t2 VALUES('2001-01-02','2001-01-03',1),('2001-01-04','2001-01-05',2); SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2001-01-01 2001-01-02 1 2001-01-02 2001-01-03 1 2001-01-03 2001-01-02 2 2001-01-02 2001-01-03 1 DELETE FROM a1, a2 USING t1 AS a1 INNER JOIN t2 AS a2 WHERE a2.c1=a1.c2; SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 DROP TABLE t1,t2; CREATE TABLE t1(c1 DATETIME NOT NULL PRIMARY KEY, c2 DATETIME NULL, c3 INT, INDEX idx2(c2)); INSERT INTO t1 VALUE('1998-01-01 09:23:45','10-01-01 14:12:33',1); UPDATE t1 SET c1='2001-01-01' WHERE c2='10-01-01 14:12:33'; SELECT c1,hour(c1),minute(c1),second(c1) FROM t1 WHERE c2='10-01-01 14:12:33'; c1 hour(c1) minute(c1) second(c1) 2001-01-01 00:00:00 0 0 0 INSERT INTO t1 VALUES('2009-01-01 08:42:42','2009-01-02 23:59:59',2); UPDATE t1 SET c1='2009-01-01 1:2:3',c2='2009-01-02 23:59:59.999999' WHERE c2='2009-01-02 23:59:59'; SELECT c1,ADDTIME(c2,'1 1:1:1.000002') FROM t1 WHERE c3=2; c1 ADDTIME(c2,'1 1:1:1.000002') 2009-01-01 01:02:03 2009-01-04 01:01:00.000002 INSERT INTO t1 VALUES('2009-02-25 15:45','09-02-27 15:46',3); SET TIMESTAMP=1235553613; UPDATE t1 SET c2=NOW() WHERE c1 >=CURDATE(); UPDATE t1 SET c1=DATE_ADD(CURDATE(),INTERVAL '1 1:1:1' DAY_SECOND) WHERE c2=CURRENT_TIMESTAMP(); SELECT * FROM t1; c1 c2 c3 2001-01-01 00:00:00 2010-01-01 14:12:33 1 2009-01-01 01:02:03 2009-01-02 23:59:59 2 2009-02-26 01:01:01 2009-02-25 12:20:13 3 INSERT INTO t1 VALUES('2001-01-06','2001-01-07 09:30:00',4),('2001-01-08',NULL,5); SELECT * FROM t1 WHERE c2 IS NULL; c1 c2 c3 2001-01-08 00:00:00 NULL 5 UPDATE t1 SET c2=NULL WHERE c1='2001-01-06 00:00:00'; SELECT * FROM t1 WHERE c2 IS NULL; c1 c2 c3 2001-01-06 00:00:00 NULL 4 2001-01-08 00:00:00 NULL 5 UPDATE t1 SET c2='2001-01-10 00:00:00' WHERE c2 IS NULL; SELECT * FROM t1 WHERE c2='2001-01-10'; c1 c2 c3 2001-01-06 00:00:00 2001-01-10 00:00:00 4 2001-01-08 00:00:00 2001-01-10 00:00:00 5 INSERT INTO t1 VALUES('2001-01-09','2001-01-10',6),('2001-01-11','2001-01-12',7); UPDATE t1 SET c1='2001-01-09 24:59:59',c2='2009-01-10 23:60:59' WHERE c1='2001-01-09'; Warnings: Warning 1265 Data truncated for column 'c1' at row 1 Warning 1265 Data truncated for column 'c2' at row 1 UPDATE t1 SET c2='2001-01-11 23:59:60' WHERE c1='2001-01-11'; Warnings: Warning 1265 Data truncated for column 'c2' at row 1 SELECT count(*) FROM t1 WHERE c1='2001-01-09 24:59:59' AND c2='2009-01-10 23:60:59'; count(*) 1 Warnings: Warning 1292 Incorrect datetime value: '2001-01-09 24:59:59' Warning 1292 Incorrect datetime value: '2009-01-10 23:60:59' SELECT count(*) FROM t1 WHERE c2='2001-01-11 23:59:60' /* returns 0 */; count(*) 0 Warnings: Warning 1292 Incorrect datetime value: '2001-01-11 23:59:60' for column 'c2' at row 1 Warning 1292 Incorrect datetime value: '2001-01-11 23:59:60' for column 'c2' at row 1 SELECT * FROM t1 WHERE c1='0000-00-00 00:00:00' OR c2='0000-00-00 00:00:00'; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 6 2001-01-11 00:00:00 0000-00-00 00:00:00 7 INSERT INTO t1 VALUES('2001-01-17','0000-00-00 00:00:00',8),('2001-01-18','2001-01-18 07:35',9); SET SQL_MODE=TRADITIONAL; SELECT * FROM t1 WHERE c2='0000-00-00 00:00:00'; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 6 2001-01-11 00:00:00 0000-00-00 00:00:00 7 2001-01-17 00:00:00 0000-00-00 00:00:00 8 Warnings: Warning 1264 Out of range value for column 'c2' at row 1 UPDATE t1 SET c2='0000-00-00 00:00:00' WHERE c2='2001-01-18 07:35'; ERROR 22007: Incorrect datetime value: '0000-00-00 00:00:00' for column 'c2' at row 1 SET SQL_MODE=DEFAULT; UPDATE t1 SET c2='0000-00-00 00:00:00' WHERE c2='2001-01-18 07:35'; UPDATE t1 SET c2='2001-01-17 12:34:00' WHERE c2='0000-00-00 00:00:00' AND c1='2001-01-17'; SELECT * FROM t1 WHERE c1='0000-00-00 00:00:00' OR c2='0000-00-00 00:00:00'; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 6 2001-01-11 00:00:00 0000-00-00 00:00:00 7 2001-01-18 00:00:00 0000-00-00 00:00:00 9 SELECT * FROM t1 WHERE c2='2001-01-17 12:34:00'; c1 c2 c3 2001-01-17 00:00:00 2001-01-17 12:34:00 8 INSERT INTO t1 VALUES('2001-01-21 05:43:43','2001-01-22 06:53:53',10); UPDATE t1 SET c1='1000-01-01 00:00:00',c2='9999-12-31 23:59:59' WHERE c1='2001-01-21 05:43:43'; SELECT * FROM t1 WHERE c1='1000-01-01 00:00:00' AND c2='9999-12-31 23:59:59'; c1 c2 c3 1000-01-01 00:00:00 9999-12-31 23:59:59 10 INSERT INTO t1 VALUES('2001-01-23 02:33','2001-01-24 03:33',11),('2001-01-25 04:33','2001-01-26 05:33',12); UPDATE t1 SET c1='2001-01-23 02:33' WHERE c1='2001-01-25 04:33'; ERROR 23000: Duplicate entry '2001-01-23 02:33:00' for key 'PRIMARY' UPDATE IGNORE t1 SET c1='2001-01-23 02:33' WHERE c1='2001-01-25 04:33'; SELECT count(*) FROM t1 WHERE c1='2001-01-23 02:33'; count(*) 1 UPDATE t1 SET c1=NULL WHERE c2='2001-01-24 03:33' /* updates to 0000-00-00 00:00:00 */; ERROR 23000: Duplicate entry '0000-00-00 00:00:00' for key 'PRIMARY' UPDATE IGNORE t1 SET c1=NULL WHERE c2='2001-01-24 03:33'; Warnings: Warning 1048 Column 'c1' cannot be null SELECT * FROM t1 WHERE c1='0000-00-00 00:00:00'; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 6 TRUNCATE TABLE t1; CREATE TABLE t2(c1 DATETIME NOT NULL PRIMARY KEY, c2 DATETIME, c3 INT); INSERT INTO t1 VALUES('2001-01-02 2:30:45','2001-01-01 1:30',1),('2001-01-03 3:30','2001-01-02 2:30:45',2); INSERT INTO t2 VALUES('2001-01-02 2:30:45','2001-01-03 3:30',1),('2001-01-04 4:30','2001-01-05 5:30',2); SELECT * FROM t1,t2 WHERE t2.c1=t1.c1; c1 c2 c3 c1 c2 c3 2001-01-02 02:30:45 2001-01-01 01:30:00 1 2001-01-02 02:30:45 2001-01-03 03:30:00 1 UPDATE t1,t2 SET t2.c1='2005-01-06 2:30:50',t1.c1='2005-01-06 2:30:50' WHERE t2.c1=t1.c1; SELECT * FROM t1,t2 WHERE t2.c1=t1.c1; c1 c2 c3 c1 c2 c3 2005-01-06 02:30:50 2001-01-01 01:30:00 1 2005-01-06 02:30:50 2001-01-03 03:30:00 1 INSERT INTO t1 VALUES('2002-01-01 3:30','2002-01-02 2:30:45',3),('2002-01-04 4:30','2002-01-02 2:30:45',4); INSERT INTO t2 VALUES('2002-01-02 2:30:45','2002-01-03 3:30',3),('2002-01-03 3:30','2002-01-04 4:30',4); SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2002-01-01 03:30:00 2002-01-02 02:30:45 3 2002-01-02 02:30:45 2002-01-03 03:30:00 3 2002-01-04 04:30:00 2002-01-02 02:30:45 4 2002-01-02 02:30:45 2002-01-03 03:30:00 3 UPDATE t1,t2 SET t2.c1='2002-01-06 2:30:50',t1.c2='2002-01-06 2:30:50' WHERE t2.c1=t1.c2; SELECT * FROM t1,t2 WHERE t2.c1='2002-01-06 2:30:50' AND t1.c2='2002-01-06 2:30:50'; c1 c2 c3 c1 c2 c3 2002-01-01 03:30:00 2002-01-06 02:30:50 3 2002-01-06 02:30:50 2002-01-03 03:30:00 3 2002-01-04 04:30:00 2002-01-06 02:30:50 4 2002-01-06 02:30:50 2002-01-03 03:30:00 3 SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2002-01-01 03:30:00 2002-01-06 02:30:50 3 2002-01-06 02:30:50 2002-01-03 03:30:00 3 2002-01-04 04:30:00 2002-01-06 02:30:50 4 2002-01-06 02:30:50 2002-01-03 03:30:00 3 DELETE FROM t1 WHERE c2='2002-01-06 2:30:50' AND c3=3; SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2002-01-04 04:30:00 2002-01-06 02:30:50 4 2002-01-06 02:30:50 2002-01-03 03:30:00 3 DROP TABLE t2; TRUNCATE TABLE t1; ALTER TABLE t1 CHANGE c1 c1 DATETIME NOT NULL, DROP PRIMARY KEY; ALTER TABLE t1 CHANGE c1 c1 DATETIME NOT NULL, ADD KEY(c1); UPDATE t1 SET c1='2002-01-07 7:30' WHERE c2='2002-01-05 5:30'; SELECT * FROM t1 WHERE c1='2002-01-07 7:30'; c1 c2 c3 INSERT INTO t1 VALUES('2002-01-08 1:30','2002-01-09 1:30',4),('2002-01-08 1:30:5','2002-01-09 1:30:5',5),('2002-01-08 1:30:10','2002-01-09 1:30:10',6),('2002-01-08 1:30:15','2002-01-09 1:30:15',7),('2002-01-08 1:30:20','2002-01-09 1:30:20',8),('2002-01-08 1:30:25','2002-01-09 1:30:25',9),('2002-01-08 1:30:30','2002-01-09 1:30:30',10),('2002-01-08 1:30:35','2002-01-09 1:30:35',11),('2002-01-08 1:30:40','2002-01-09 1:30:40',12),('2002-01-08 1:30:45','2002-01-09 1:30:45',13),('2002-01-08 1:30:50','2002-01-09 1:30:50',14),('2002-01-08 1:30:55','2002-01-09 1:30:55',15),('2002-01-08 1:30:59','2002-01-09 1:30:59',16),('2002-01-08 2:00','2002-01-09 2:00',17),('2002-01-08 2:00:05','2002-01-09 2:00:05',18),('2002-01-08 2:00:10','2002-01-09 2:00:10',19),('2002-01-08 2:00:15','2002-01-09 2:00:15',20); SELECT * FROM t1; c1 c2 c3 2002-01-08 01:30:00 2002-01-09 01:30:00 4 2002-01-08 01:30:05 2002-01-09 01:30:05 5 2002-01-08 01:30:10 2002-01-09 01:30:10 6 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:30 2002-01-09 01:30:30 10 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:55 2002-01-09 01:30:55 15 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:00 2002-01-09 02:00:00 17 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-01-08 02:00:10 2002-01-09 02:00:10 19 2002-01-08 02:00:15 2002-01-09 02:00:15 20 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 <> '2002-01-09 01:30:00' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 <> '2002-01-09 01:30:00' ORDER BY c2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:30 2002-01-09 01:30:30 10 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:55 2002-01-09 01:30:55 15 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:00 2002-01-09 02:00:00 17 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-01-08 02:00:10 2002-01-09 02:00:10 19 2002-01-08 02:00:15 2002-01-09 02:00:15 20 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 >= '20020109013010' ORDER BY c2 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 >= '20020109013010' ORDER BY c2 DESC; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-01-08 02:00:00 2002-01-09 02:00:00 17 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 01:30:55 2002-01-09 01:30:55 15 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:30 2002-01-09 01:30:30 10 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2003-01-01 01:02:03 2002-01-09 01:30:10 6 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 <='02-01-09 1:30:20' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 <='02-01-09 1:30:20' ORDER BY c2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 <=> '020109013030' ORDER BY c2 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 <=> '020109013030' ORDER BY c2 DESC; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:30 10 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 BETWEEN '20020109 01:30:40' AND '20020109 01:30:50' ORDER BY c2 LIMIT 2; Warnings: Warning 1292 Incorrect datetime value: '20020109 01:30:40' Warning 1292 Incorrect datetime value: '20020109 01:30:50' SELECT * FROM t1 WHERE c2 BETWEEN '20020109 01:30:40' AND '20020109 01:30:50' ORDER BY c2; c1 c2 c3 Warnings: Warning 1292 Incorrect datetime value: '20020109 01:30:40' Warning 1292 Incorrect datetime value: '20020109 01:30:50' UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 IN('2002-01-09 1:30:55','2002-01-09 2:00') ORDER BY c2 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 IN('2002-01-09 1:30:55','2002-01-09 2:00') ORDER BY c2 DESC; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 01:30:55 15 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 IS NULL ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2; c1 c2 c3 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2>= '2002-02-09 2:00:5' AND c1 < '2002-02-09 2:00:15' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2>= '2002-02-09 2:00:5' AND c1 < '2002-02-09 2:00:15' ORDER BY c2; c1 c2 c3 INSERT INTO t1 VALUES('20020301000001','20020302000001',1),('020303010030','020304010030',2),('050103000001','050104000001',3),('5-10-10 1:2:3','5-10-10 1:2:3',4),('0000-00-00 00:00:01',NULL,5); SELECT * FROM t1; c1 c2 c3 0000-00-00 00:00:01 NULL 5 0005-10-10 01:02:03 0005-10-10 01:02:03 4 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT c1 FROM t1; c1 0000-00-00 00:00:01 0005-10-10 01:02:03 2002-01-08 01:30:15 2002-01-08 01:30:20 2002-01-08 01:30:25 2002-01-08 01:30:35 2002-01-08 01:30:40 2002-01-08 01:30:45 2002-01-08 01:30:50 2002-01-08 01:30:59 2002-01-08 02:00:05 2002-03-01 00:00:01 2002-03-03 01:00:30 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2005-01-03 00:00:01 SELECT c1 FROM t1 ORDER BY c1 DESC; c1 2005-01-03 00:00:01 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2002-03-03 01:00:30 2002-03-01 00:00:01 2002-01-08 02:00:05 2002-01-08 01:30:59 2002-01-08 01:30:50 2002-01-08 01:30:45 2002-01-08 01:30:40 2002-01-08 01:30:35 2002-01-08 01:30:25 2002-01-08 01:30:20 2002-01-08 01:30:15 0005-10-10 01:02:03 0000-00-00 00:00:01 SELECT * FROM t1 WHERE c1='2003-01-01 1:2:3'; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 SELECT * FROM t1 WHERE c1 <> '2003-01-01 1:2:3' ORDER BY c1,c2 LIMIT 2; c1 c2 c3 0000-00-00 00:00:01 NULL 5 0005-10-10 01:02:03 0005-10-10 01:02:03 4 SELECT * FROM t1 WHERE c1 <> '2003-01-01 1:2:3' ORDER BY c1,c2 DESC; c1 c2 c3 0000-00-00 00:00:01 NULL 5 0005-10-10 01:02:03 0005-10-10 01:02:03 4 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1 > '20030101010203' ORDER BY c1,c2 DESC LIMIT 2; c1 c2 c3 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1 > '20030101010203' ORDER BY c1,c2; c1 c2 c3 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1 < '03-01-01 1:2:3' ORDER BY c1,c2 LIMIT 2; c1 c2 c3 0000-00-00 00:00:01 NULL 5 0005-10-10 01:02:03 0005-10-10 01:02:03 4 SELECT * FROM t1 WHERE c1 < '03-01-01 1:2:3' ORDER BY c1,c2 DESC; c1 c2 c3 0000-00-00 00:00:01 NULL 5 0005-10-10 01:02:03 0005-10-10 01:02:03 4 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 SELECT * FROM t1 WHERE c1 <=> '2003-01-01 1:2:3' ORDER BY c1,c2 DESC LIMIT 2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2003-01-01 01:02:03 2002-01-09 02:00:10 19 SELECT * FROM t1 WHERE c1 <=> '2003-01-01 1:2:3' ORDER BY c1,c2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 SELECT * FROM t1 WHERE c1 BETWEEN '20020301' AND '2003-01-01 1:2:3' ORDER BY c1,c2 LIMIT 2; c1 c2 c3 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 SELECT * FROM t1 WHERE c1 BETWEEN '20020301' AND '2003-01-01 1:2:3' ORDER BY c1,c2 DESC; c1 c2 c3 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:00 4 SELECT * FROM t1 WHERE c1 IN('2003-01-01 1:2:3','2005-01-03 00:00:01') ORDER BY c1,c2 DESC LIMIT 2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2003-01-01 01:02:03 2002-01-09 02:00:10 19 SELECT * FROM t1 WHERE c1 IN('2003-01-01 1:2:3','2005-01-03 00:00:01') ORDER BY c1,c2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1 LIMIT 2; c1 c2 c3 0000-00-00 00:00:01 NULL 5 SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1 DESC; c1 c2 c3 0000-00-00 00:00:01 NULL 5 SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC LIMIT 2; c1 c2 c3 0005-10-10 01:02:03 0005-10-10 01:02:03 4 2003-01-01 01:02:03 2002-01-09 01:30:00 4 SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1; c1 c2 c3 0005-10-10 01:02:03 0005-10-10 01:02:03 4 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1>='2003-01-01 01:02:03' AND c1 <= '20050104000001' ORDER BY c2,c1 DESC LIMIT 2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 SELECT * FROM t1 WHERE c1>='2003-01-01 01:02:03' AND c1 <= '20050104000001' ORDER BY c2,c1; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1='2003-01-03 1:2:3' OR c2='2002-03-02 00:00:01'; c1 c2 c3 2002-03-01 00:00:01 2002-03-02 00:00:01 1 UPDATE t1 SET c1='20060101000001' WHERE c1='2003-01-03 1:2:3' OR c2='2002-03-02 00:00:01'; SELECT * FROM t1 WHERE c1='20060101000001' OR c2='020304010030'; c1 c2 c3 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2006-01-01 00:00:01 2002-03-02 00:00:01 1 TRUNCATE TABLE t1; ALTER TABLE t1 CHANGE c1 c1 DATETIME NOT NULL, ADD PRIMARY KEY(c1); INSERT INTO t1 VALUES(NOW(),NOW(),3),(ADDTIME(NOW(),'1 01:01:01'),ADDTIME(NOW(),'1 01:01:01'),4),(ADDTIME(NOW(),'2 01:01:01'),ADDTIME(NOW(),'2 01:01:01'),5),(ADDTIME(NOW(),'3 01:01:01'),ADDTIME(NOW(),'3 01:01:01'),6); INSERT INTO t1 VALUES('1000-01-01 00:00:00','1000-01-01 00:00:00',1),('9999-12-31 23:59:59','9999-12-31 23:59:59',2); SELECT * FROM t1 WHERE c1 <='1000-01-01 00:00:00'; c1 c2 c3 1000-01-01 00:00:00 1000-01-01 00:00:00 1 DELETE FROM t1 WHERE c1 <='1000-01-01 00:00:00'; SELECT * FROM t1 WHERE c1 <='1000-01-01 00:00:00'; c1 c2 c3 SELECT * FROM t1 WHERE c1 >='9999-12-31 23:59:59'; c1 c2 c3 9999-12-31 23:59:59 9999-12-31 23:59:59 2 DELETE FROM t1 WHERE c1 >='9999-12-31 23:59:59'; SELECT * FROM t1 WHERE c1 >='9999-12-31 23:59:59'; c1 c2 c3 SELECT * FROM t1 WHERE c1 > ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 2009-02-28 13:21:14 2009-02-28 13:21:14 6 2009-02-27 13:21:14 2009-02-27 13:21:14 5 DELETE FROM t1 WHERE c1 > ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC LIMIT 2; SELECT * FROM t1 WHERE c1 > ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 SELECT * FROM t1 WHERE c1 <> CURRENT_TIMESTAMP() ORDER BY c1; c1 c2 c3 2009-02-26 13:21:14 2009-02-26 13:21:14 4 DELETE FROM t1 WHERE c1 <> CURRENT_TIMESTAMP() ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1 <> CURRENT_TIMESTAMP() ORDER BY c1; c1 c2 c3 INSERT INTO t1 VALUES('2001-01-01',NOW(),7),(ADDTIME(NOW(),'1 01:01:01'),ADDTIME(NOW(),'1 01:01:01'),8),(ADDTIME(NOW(),'2 01:01:01'),ADDTIME(NOW(),'2 01:01:01'),9),(ADDTIME(NOW(),'3 01:01:01'),ADDTIME(NOW(),'3 01:01:01'),10); SELECT * FROM t1 WHERE c1 < ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 2001-01-01 00:00:00 2009-02-25 12:20:13 7 2009-02-25 12:20:13 2009-02-25 12:20:13 3 2009-02-26 13:21:14 2009-02-26 13:21:14 8 DELETE FROM t1 WHERE c1 < ADDTIME(NOW(),'2 01:01:01') ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1 < ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 2009-02-26 13:21:14 2009-02-26 13:21:14 8 SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 2009-02-26 13:21:14 2009-02-26 13:21:14 8 DELETE FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 DELETE FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 INSERT INTO t1 VALUES('2001-01-01',NOW(),11),(ADDTIME(NOW(),'1 01:01:01'),ADDTIME(NOW(),'1 01:01:01'),12),(ADDTIME(NOW(),'4 01:01:01'),NULL,13),(ADDTIME(NOW(),'5 01:01:01'),NULL,14); SELECT * FROM t1 WHERE c1 BETWEEN NOW() AND ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 2009-02-26 13:21:14 2009-02-26 13:21:14 12 2009-02-27 13:21:14 2009-02-27 13:21:14 9 DELETE FROM t1 WHERE c1 BETWEEN NOW() AND ADDTIME(NOW(),'2 01:01:01') ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1 BETWEEN NOW() AND ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 SELECT * FROM t1 WHERE c1 IN(NOW(),ADDTIME(NOW(),'3 01:01:01')) ORDER BY c1 DESC; c1 c2 c3 2009-02-28 13:21:14 2009-02-28 13:21:14 10 DELETE FROM t1 WHERE c1 IN(NOW(),ADDTIME(NOW(),'3 01:01:01')) ORDER BY c1 DESC LIMIT 2; SELECT * FROM t1 WHERE c1 IN(NOW(),ADDTIME(NOW(),'3 01:01:01')) ORDER BY c1 DESC; c1 c2 c3 SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1; c1 c2 c3 2009-03-01 13:21:14 NULL 13 2009-03-02 13:21:14 NULL 14 DELETE FROM t1 WHERE c2 IS NULL ORDER BY c2,c1 LIMIT 2; SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1; c1 c2 c3 INSERT INTO t1 VALUES(ADDTIME(NOW(),'6 01:01:01'),ADDTIME(NOW(),'6 01:01:01'),15),(ADDTIME(NOW(),'7 01:01:01'),NULL,16),(ADDTIME(NOW(),'8 01:01:01'),ADDTIME(NOW(),'8 01:01:01'),17),(ADDTIME(NOW(),'9 01:01:01'),ADDTIME(NOW(),'9 01:01:01'),18),(ADDTIME(NOW(),'10 01:01:01'),ADDTIME(NOW(),'10 01:01:01'),19); SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC; c1 c2 c3 2001-01-01 00:00:00 2009-02-25 12:20:13 11 2009-03-03 13:21:14 2009-03-03 13:21:14 15 2009-03-05 13:21:14 2009-03-05 13:21:14 17 2009-03-06 13:21:14 2009-03-06 13:21:14 18 2009-03-07 13:21:14 2009-03-07 13:21:14 19 DELETE FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC; c1 c2 c3 2009-03-05 13:21:14 2009-03-05 13:21:14 17 2009-03-06 13:21:14 2009-03-06 13:21:14 18 2009-03-07 13:21:14 2009-03-07 13:21:14 19 SELECT * FROM t1 WHERE c1>=ADDTIME(NOW(),'5 01:01:01') AND c2 < ADDTIME(NOW(),'8 13:25') ORDER BY c1; c1 c2 c3 2009-03-05 13:21:14 2009-03-05 13:21:14 17 DELETE FROM t1 WHERE c1>=ADDTIME(NOW(),'5 01:01:01') AND c2 < ADDTIME(NOW(),'8 13:25') ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1>=ADDTIME(NOW(),'5 01:01:01') AND c2 < ADDTIME(NOW(),'8 13:25') ORDER BY c1; c1 c2 c3 SELECT * FROM t1 WHERE c1=ADDTIME(NOW(),'9 01:01:01') OR c2=ADDTIME(NOW(),'10 01:01:01'); c1 c2 c3 2009-03-06 13:21:14 2009-03-06 13:21:14 18 2009-03-07 13:21:14 2009-03-07 13:21:14 19 DELETE FROM t1 WHERE c1=ADDTIME(NOW(),'9 01:01:01') OR c2=ADDTIME(NOW(),'10 01:01:01'); SELECT * FROM t1 WHERE c1=ADDTIME(NOW(),'9 01:01:01') OR c2=ADDTIME(NOW(),'10 01:01:01'); c1 c2 c3 SELECT count(*) FROM t1; count(*) 1 TRUNCATE TABLE t1; SELECT count(*) FROM t1; count(*) 0 CREATE TABLE t2(c1 DATETIME NOT NULL PRIMARY KEY, c2 DATETIME, c3 INT); INSERT INTO t1 VALUES('2001-01-01 1:30','2001-01-02 2:30',1),('2001-01-03 3:30','2001-01-02 2:30',2); INSERT INTO t2 VALUES('2001-01-02 2:30','2001-01-03 3:30',1),('2001-01-04 4:30','2001-01-05 5:30',2); SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2001-01-01 01:30:00 2001-01-02 02:30:00 1 2001-01-02 02:30:00 2001-01-03 03:30:00 1 2001-01-03 03:30:00 2001-01-02 02:30:00 2 2001-01-02 02:30:00 2001-01-03 03:30:00 1 DELETE t1,t2 FROM t1,t2 WHERE t2.c1=t1.c2; SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 TRUNCATE TABLE t1; TRUNCATE TABLE t2; INSERT INTO t1 VALUES('2001-01-01 1:30','2001-01-02 2:30',1),('2001-01-03 3:30','2001-01-02 2:30',2); INSERT INTO t2 VALUES('2001-01-02 2:30','2001-01-03 3:30',1),('2001-01-04 4:30','2001-01-05 5:30',2); SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2001-01-01 01:30:00 2001-01-02 02:30:00 1 2001-01-02 02:30:00 2001-01-03 03:30:00 1 2001-01-03 03:30:00 2001-01-02 02:30:00 2 2001-01-02 02:30:00 2001-01-03 03:30:00 1 DELETE FROM a1, a2 USING t1 AS a1 INNER JOIN t2 AS a2 WHERE a2.c1=a1.c2; SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 DROP TABLE t1,t2; CREATE TABLE mt1(id int(11) NOT NULL default '0', name varchar(10) default NULL, PRIMARY KEY (id)); INSERT INTO mt1 VALUES (1,'aaa'),(2,'aaa'),(3,'aaa'); CREATE TABLE mt2 (id int(11) NOT NULL default '0', name varchar(10) default NULL, PRIMARY KEY (id)); INSERT INTO mt2 VALUES (2,'bbb'),(3,'bbb'),(4,'bbb'); CREATE TABLE mt3 (id int(11) NOT NULL default '0', mydate datetime default NULL, PRIMARY KEY (id)); INSERT INTO mt3 VALUES (1,'2002-02-04 00:00:00'),(3,'2002-05-12 00:00:00'),(5,'2002-05-12 00:00:00'),(6,'2002-06-22 00:00:00'),(7,'2002-07-22 00:00:00'); delete mt1,mt2,mt3 from mt1,mt2,mt3 where to_days(now())-to_days(mt3.mydate)>=30 and mt3.id=mt1.id and mt3.id=mt2.id; select * from mt3; id mydate 1 2002-02-04 00:00:00 5 2002-05-12 00:00:00 6 2002-06-22 00:00:00 7 2002-07-22 00:00:00 DROP TABLE mt1,mt2,mt3; CREATE TABLE t1(c1 TIMESTAMP NOT NULL PRIMARY KEY, c2 TIMESTAMP NULL, c3 INT, INDEX idx2(c2)); INSERT INTO t1 VALUE('1998-01-01 09:23:45','10-01-01 14:12:33',1); UPDATE t1 SET c1='2001-01-01' WHERE c2='10-01-01 14:12:33'; SELECT c1,hour(c1),minute(c1),second(c1) FROM t1 WHERE c2='10-01-01 14:12:33'; c1 hour(c1) minute(c1) second(c1) 2001-01-01 00:00:00 0 0 0 INSERT INTO t1 VALUES('2009-01-01 08:42:42','2009-01-02 23:59:59',2); UPDATE t1 SET c1='2009-01-01 1:2:3',c2='2009-01-02 23:59:59.999999' WHERE c2='2009-01-02 23:59:59'; SELECT c1,ADDTIME(c2,'1 1:1:1.000002') FROM t1 WHERE c3=2; c1 ADDTIME(c2,'1 1:1:1.000002') 2009-01-01 01:02:03 2009-01-04 01:01:00.000002 INSERT INTO t1 VALUES('2009-02-25 15:45','09-02-27 15:46',3); SET TIMESTAMP=1235553613; UPDATE t1 SET c2=NOW() WHERE c1 >=CURDATE() /* updates c1 with current timestamp */; UPDATE t1 SET c1=DATE_ADD(CURDATE(),INTERVAL '1 1:1:1' DAY_SECOND) WHERE c2=CURRENT_TIMESTAMP(); SELECT * FROM t1; c1 c2 c3 2001-01-01 00:00:00 2010-01-01 14:12:33 1 2009-01-01 01:02:03 2009-01-02 23:59:59 2 2009-02-26 01:01:01 2009-02-25 12:20:13 3 INSERT INTO t1 VALUES('2001-01-06','2001-01-07 09:30:00',4),('2001-01-08',NULL,5); UPDATE t1 SET c1='20010106010030',c2=NULL WHERE c1='2001-01-06 00:00:00'; SELECT c1,c2 FROM t1 WHERE c2 IS NULL; c1 c2 2001-01-06 01:00:30 NULL 2001-01-08 00:00:00 NULL SELECT * FROM t1; c1 c2 c3 2001-01-01 00:00:00 2010-01-01 14:12:33 1 2001-01-06 01:00:30 NULL 4 2001-01-08 00:00:00 NULL 5 2009-01-01 01:02:03 2009-01-02 23:59:59 2 2009-02-26 01:01:01 2009-02-25 12:20:13 3 UPDATE t1 SET c1=c1,c2='2001-01-10 00:00:00' WHERE c2 IS NULL; SELECT * FROM t1 WHERE c2='2001-01-10'; c1 c2 c3 2001-01-06 01:00:30 2001-01-10 00:00:00 4 2001-01-08 00:00:00 2001-01-10 00:00:00 5 INSERT INTO t1 VALUES('2001-01-09','2001-01-10',6),('2001-01-11','2001-01-12',7); UPDATE t1 SET c1='2001-01-09 24:59:59',c2='2009-01-10 23:60:59' WHERE c1='2001-01-09'; Warnings: Warning 1265 Data truncated for column 'c1' at row 1 Warning 1265 Data truncated for column 'c2' at row 1 UPDATE t1 SET c1='2001-01-11 23:59:59',c2='2001-01-11 23:59:60' WHERE c1='2001-01-11'; Warnings: Warning 1265 Data truncated for column 'c2' at row 1 SELECT count(*) FROM t1 WHERE c1='2001-01-09 24:59:59' AND c2='2009-01-10 23:60:59'; count(*) 1 Warnings: Warning 1292 Incorrect datetime value: '2001-01-09 24:59:59' Warning 1292 Incorrect datetime value: '2009-01-10 23:60:59' SELECT count(*) FROM t1 WHERE c1='2001-01-11 23:59:59' AND c2='2001-01-11 23:59:60'; count(*) 1 Warnings: Warning 1292 Incorrect datetime value: '2001-01-11 23:59:60' SELECT * FROM t1 WHERE c1='0000-00-00 00:00:00' OR c2='0000-00-00 00:00:00'; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 6 2001-01-11 23:59:59 0000-00-00 00:00:00 7 INSERT INTO t1 VALUES('2001-01-17','0000-00-00 00:00:00',8),('2001-01-18','2001-01-18 07:35',9); SET SQL_MODE=TRADITIONAL; SELECT * FROM t1 WHERE c2='0000-00-00 00:00:00'; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 6 2001-01-11 23:59:59 0000-00-00 00:00:00 7 2001-01-17 00:00:00 0000-00-00 00:00:00 8 Warnings: Warning 1265 Data truncated for column 'c2' at row 1 UPDATE t1 SET c1='1972-01-01 07:35',c2='0000-00-00 00:00:00' WHERE c2='2001-01-18 07:35'; ERROR 22007: Incorrect datetime value: '0000-00-00 00:00:00' for column 'c2' at row 1 SET SQL_MODE=DEFAULT; UPDATE t1 SET c1='1972-01-01 07:35',c2='0000-00-00 00:00:00' WHERE c2='2001-01-18 07:35'; UPDATE t1 SET c1='2001-01-17 12:34:00',c2='2001-01-17 12:34:00' WHERE c2='0000-00-00 00:00:00' AND c1='2001-01-17'; SELECT * FROM t1 WHERE c1='0000-00-00 00:00:00' OR c2='0000-00-00 00:00:00'; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 6 1972-01-01 07:35:00 0000-00-00 00:00:00 9 2001-01-11 23:59:59 0000-00-00 00:00:00 7 SELECT * FROM t1 WHERE c1='2001-01-17 12:34:00' AND c2='2001-01-17 12:34:00'; c1 c2 c3 2001-01-17 12:34:00 2001-01-17 12:34:00 8 INSERT INTO t1 VALUES('2001-01-21 05:43:43','2001-01-22 06:53:53',10); UPDATE t1 SET c1='1971-01-01 00:00:01',c2='2038-01-09 03:14:07' WHERE c1='2001-01-21 05:43:43'; SELECT * FROM t1 WHERE c1='1971-01-01 00:00:01' AND c2='2038-01-09 03:14:07'; c1 c2 c3 1971-01-01 00:00:01 2038-01-09 03:14:07 10 INSERT INTO t1 VALUES('2001-01-23 02:33','2001-01-24 03:33',11),('2001-01-25 04:33','2001-01-26 05:33',12); UPDATE t1 SET c1='2001-01-23 02:33' WHERE c1='2001-01-25 04:33'; ERROR 23000: Duplicate entry '2001-01-23 02:33:00' for key 'PRIMARY' UPDATE IGNORE t1 SET c1='2001-01-23 02:33' WHERE c1='2001-01-25 04:33'; SELECT count(*) FROM t1 WHERE c1='2001-01-23 02:33'; count(*) 1 UPDATE t1 SET c1=NULL WHERE c2='2001-01-24 03:33' /* updates to current timestamp */; UPDATE IGNORE t1 SET c1=NULL WHERE c2='2001-01-26 05:33'; SELECT * FROM t1 WHERE c1=CURRENT_TIMESTAMP(); c1 c2 c3 2009-02-25 12:20:13 2001-01-24 03:33:00 11 TRUNCATE TABLE t1; CREATE TABLE t2(c1 TIMESTAMP NOT NULL PRIMARY KEY, c2 TIMESTAMP, c3 INT); INSERT INTO t1 VALUES('2001-01-02 2:30:45','2001-01-01 1:30',1),('2001-01-03 3:30','2001-01-02 2:30:45',2); INSERT INTO t2 VALUES('2001-01-02 2:30:45','2001-01-03 3:30',1),('2001-01-04 4:30','2001-01-05 5:30',2); SELECT * FROM t1,t2 WHERE t2.c1=t1.c1; c1 c2 c3 c1 c2 c3 2001-01-02 02:30:45 2001-01-01 01:30:00 1 2001-01-02 02:30:45 2001-01-03 03:30:00 1 UPDATE t1,t2 SET t2.c1='2005-01-06 2:30:50',t1.c1='2005-01-06 2:30:50' WHERE t2.c1=t1.c1; SELECT * FROM t1,t2 WHERE t2.c1=t1.c1; c1 c2 c3 c1 c2 c3 2005-01-06 02:30:50 2001-01-01 01:30:00 1 2005-01-06 02:30:50 2001-01-03 03:30:00 1 INSERT INTO t1 VALUES('2002-01-01 3:30','2002-01-02 2:30:45',3),('2002-01-04 4:30','2002-01-02 2:30:45',4); INSERT INTO t2 VALUES('2002-01-02 2:30:45','2002-01-03 3:30',3),('2002-01-03 3:30','2002-01-04 4:30',4); SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2002-01-01 03:30:00 2002-01-02 02:30:45 3 2002-01-02 02:30:45 2002-01-03 03:30:00 3 2002-01-04 04:30:00 2002-01-02 02:30:45 4 2002-01-02 02:30:45 2002-01-03 03:30:00 3 UPDATE t1,t2 SET t2.c1='2002-01-06 2:30:50',t1.c1=t1.c1,t1.c2='2002-01-06 2:30:50' WHERE t2.c1=t1.c2; SELECT * FROM t1,t2 WHERE t2.c1='2002-01-06 2:30:50' AND t1.c2='2002-01-06 2:30:50'; c1 c2 c3 c1 c2 c3 2002-01-01 03:30:00 2002-01-06 02:30:50 3 2002-01-06 02:30:50 2002-01-03 03:30:00 3 2002-01-04 04:30:00 2002-01-06 02:30:50 4 2002-01-06 02:30:50 2002-01-03 03:30:00 3 SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2002-01-01 03:30:00 2002-01-06 02:30:50 3 2002-01-06 02:30:50 2002-01-03 03:30:00 3 2002-01-04 04:30:00 2002-01-06 02:30:50 4 2002-01-06 02:30:50 2002-01-03 03:30:00 3 DELETE FROM t1 WHERE c2='2002-01-06 2:30:50' AND c3=3; SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2002-01-04 04:30:00 2002-01-06 02:30:50 4 2002-01-06 02:30:50 2002-01-03 03:30:00 3 DROP TABLE t2; TRUNCATE TABLE t1; ALTER TABLE t1 CHANGE c1 c1 TIMESTAMP NOT NULL, DROP PRIMARY KEY; ALTER TABLE t1 CHANGE c1 c1 TIMESTAMP NOT NULL, ADD KEY(c1); UPDATE t1 SET c1='2002-01-07 7:30' WHERE c2='2002-01-05 5:30'; SELECT * FROM t1 WHERE c1='2002-01-07 7:30'; c1 c2 c3 INSERT INTO t1 VALUES('2002-01-08 1:30','2002-01-09 1:30',4),('2002-01-08 1:30:5','2002-01-09 1:30:5',5),('2002-01-08 1:30:10','2002-01-09 1:30:10',6),('2002-01-08 1:30:15','2002-01-09 1:30:15',7),('2002-01-08 1:30:20','2002-01-09 1:30:20',8),('2002-01-08 1:30:25','2002-01-09 1:30:25',9),('2002-01-08 1:30:30','2002-01-09 1:30:30',10),('2002-01-08 1:30:35','2002-01-09 1:30:35',11),('2002-01-08 1:30:40','2002-01-09 1:30:40',12),('2002-01-08 1:30:45','2002-01-09 1:30:45',13),('2002-01-08 1:30:50','2002-01-09 1:30:50',14),('2002-01-08 1:30:55','2002-01-09 1:30:55',15),('2002-01-08 1:30:59','2002-01-09 1:30:59',16),('2002-01-08 2:00','2002-01-09 2:00',17),('2002-01-08 2:00:05','2002-01-09 2:00:05',18),('2002-01-08 2:00:10','2002-01-09 2:00:10',19),('2002-01-08 2:00:15','2002-01-09 2:00:15',20); SELECT * FROM t1; c1 c2 c3 2002-01-08 01:30:00 2002-01-09 01:30:00 4 2002-01-08 01:30:05 2002-01-09 01:30:05 5 2002-01-08 01:30:10 2002-01-09 01:30:10 6 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:30 2002-01-09 01:30:30 10 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:55 2002-01-09 01:30:55 15 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:00 2002-01-09 02:00:00 17 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-01-08 02:00:10 2002-01-09 02:00:10 19 2002-01-08 02:00:15 2002-01-09 02:00:15 20 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 <> '2002-01-09 01:30:00' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 <> '2002-01-09 01:30:00' ORDER BY c2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:30 2002-01-09 01:30:30 10 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:55 2002-01-09 01:30:55 15 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:00 2002-01-09 02:00:00 17 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-01-08 02:00:10 2002-01-09 02:00:10 19 2002-01-08 02:00:15 2002-01-09 02:00:15 20 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 >= '20020109013010' ORDER BY c2 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 >= '20020109013010' ORDER BY c2 DESC; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-01-08 02:00:00 2002-01-09 02:00:00 17 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 01:30:55 2002-01-09 01:30:55 15 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:30 2002-01-09 01:30:30 10 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2003-01-01 01:02:03 2002-01-09 01:30:10 6 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 <='02-01-09 1:30:20' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 <='02-01-09 1:30:20' ORDER BY c2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 <=> '020109013030' ORDER BY c2 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 <=> '020109013030' ORDER BY c2 DESC; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:30 10 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 BETWEEN '20020109 01:30:40' AND '20020109 01:30:50' ORDER BY c2 LIMIT 2; Warnings: Warning 1292 Incorrect datetime value: '20020109 01:30:40' Warning 1292 Incorrect datetime value: '20020109 01:30:50' SELECT * FROM t1 WHERE c2 BETWEEN '20020109 01:30:40' AND '20020109 01:30:50' ORDER BY c2; c1 c2 c3 Warnings: Warning 1292 Incorrect datetime value: '20020109 01:30:40' Warning 1292 Incorrect datetime value: '20020109 01:30:50' UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 IN('2002-01-09 1:30:55','2002-01-09 2:00') ORDER BY c2 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 IN('2002-01-09 1:30:55','2002-01-09 2:00') ORDER BY c2 DESC; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 01:30:55 15 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2 IS NULL ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2; c1 c2 c3 UPDATE t1 SET c1='2003-01-01 1:2:3' WHERE c2>= '2002-02-09 2:00:5' AND c1 < '2002-02-09 2:00:15' ORDER BY c2 LIMIT 2; SELECT * FROM t1 WHERE c2>= '2002-02-09 2:00:5' AND c1 < '2002-02-09 2:00:15' ORDER BY c2; c1 c2 c3 INSERT INTO t1 VALUES('20020301000001','20020302000001',1),('020303010030','020304010030',2),('050103000001','050104000001',3),('5-10-10 1:2:3','5-10-10 1:2:3',4),('0000-00-00 00:00:01',NULL,5); Warnings: Warning 1264 Out of range value for column 'c1' at row 4 Warning 1264 Out of range value for column 'c2' at row 4 Warning 1265 Data truncated for column 'c1' at row 5 SELECT * FROM t1; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 4 0000-00-00 00:00:00 NULL 5 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT c1 FROM t1; c1 0000-00-00 00:00:00 0000-00-00 00:00:00 2002-01-08 01:30:15 2002-01-08 01:30:20 2002-01-08 01:30:25 2002-01-08 01:30:35 2002-01-08 01:30:40 2002-01-08 01:30:45 2002-01-08 01:30:50 2002-01-08 01:30:59 2002-01-08 02:00:05 2002-03-01 00:00:01 2002-03-03 01:00:30 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2005-01-03 00:00:01 SELECT c1 FROM t1 ORDER BY c1 DESC; c1 2005-01-03 00:00:01 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2003-01-01 01:02:03 2002-03-03 01:00:30 2002-03-01 00:00:01 2002-01-08 02:00:05 2002-01-08 01:30:59 2002-01-08 01:30:50 2002-01-08 01:30:45 2002-01-08 01:30:40 2002-01-08 01:30:35 2002-01-08 01:30:25 2002-01-08 01:30:20 2002-01-08 01:30:15 0000-00-00 00:00:00 0000-00-00 00:00:00 SELECT * FROM t1 WHERE c1='2003-01-01 1:2:3'; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 SELECT * FROM t1 WHERE c1 <> '2003-01-01 1:2:3' ORDER BY c1,c2 LIMIT 2; c1 c2 c3 0000-00-00 00:00:00 NULL 5 0000-00-00 00:00:00 0000-00-00 00:00:00 4 SELECT * FROM t1 WHERE c1 <> '2003-01-01 1:2:3' ORDER BY c1,c2 DESC; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 4 0000-00-00 00:00:00 NULL 5 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1 > '20030101010203' ORDER BY c1,c2 DESC LIMIT 2; c1 c2 c3 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1 > '20030101010203' ORDER BY c1,c2; c1 c2 c3 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1 < '03-01-01 1:2:3' ORDER BY c1,c2 LIMIT 2; c1 c2 c3 0000-00-00 00:00:00 NULL 5 0000-00-00 00:00:00 0000-00-00 00:00:00 4 SELECT * FROM t1 WHERE c1 < '03-01-01 1:2:3' ORDER BY c1,c2 DESC; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 4 0000-00-00 00:00:00 NULL 5 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 SELECT * FROM t1 WHERE c1 <=> '2003-01-01 1:2:3' ORDER BY c1,c2 DESC LIMIT 2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2003-01-01 01:02:03 2002-01-09 02:00:10 19 SELECT * FROM t1 WHERE c1 <=> '2003-01-01 1:2:3' ORDER BY c1,c2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 SELECT * FROM t1 WHERE c1 BETWEEN '20020301' AND '2003-01-01 1:2:3' ORDER BY c1,c2 LIMIT 2; c1 c2 c3 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 SELECT * FROM t1 WHERE c1 BETWEEN '20020301' AND '2003-01-01 1:2:3' ORDER BY c1,c2 DESC; c1 c2 c3 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:00 4 SELECT * FROM t1 WHERE c1 IN('2003-01-01 1:2:3','2005-01-03 00:00:01') ORDER BY c1,c2 DESC LIMIT 2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2003-01-01 01:02:03 2002-01-09 02:00:10 19 SELECT * FROM t1 WHERE c1 IN('2003-01-01 1:2:3','2005-01-03 00:00:01') ORDER BY c1,c2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1 LIMIT 2; c1 c2 c3 0000-00-00 00:00:00 NULL 5 SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1 DESC; c1 c2 c3 0000-00-00 00:00:00 NULL 5 SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC LIMIT 2; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 4 2003-01-01 01:02:03 2002-01-09 01:30:00 4 SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1; c1 c2 c3 0000-00-00 00:00:00 0000-00-00 00:00:00 4 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2002-01-08 01:30:15 2002-01-09 01:30:15 7 2002-01-08 01:30:20 2002-01-09 01:30:20 8 2002-01-08 01:30:25 2002-01-09 01:30:25 9 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2002-01-08 01:30:35 2002-01-09 01:30:35 11 2002-01-08 01:30:40 2002-01-09 01:30:40 12 2002-01-08 01:30:45 2002-01-09 01:30:45 13 2002-01-08 01:30:50 2002-01-09 01:30:50 14 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2002-01-08 01:30:59 2002-01-09 01:30:59 16 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2002-01-08 02:00:05 2002-01-09 02:00:05 18 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2002-03-01 00:00:01 2002-03-02 00:00:01 1 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1>='2003-01-01 01:02:03' AND c1 <= '20050104000001' ORDER BY c2,c1 DESC LIMIT 2; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 SELECT * FROM t1 WHERE c1>='2003-01-01 01:02:03' AND c1 <= '20050104000001' ORDER BY c2,c1; c1 c2 c3 2003-01-01 01:02:03 2002-01-09 01:30:00 4 2003-01-01 01:02:03 2002-01-09 01:30:05 5 2003-01-01 01:02:03 2002-01-09 01:30:10 6 2003-01-01 01:02:03 2002-01-09 01:30:30 10 2003-01-01 01:02:03 2002-01-09 01:30:55 15 2003-01-01 01:02:03 2002-01-09 02:00:00 17 2003-01-01 01:02:03 2002-01-09 02:00:10 19 2003-01-01 01:02:03 2002-01-09 02:00:15 20 2005-01-03 00:00:01 2005-01-04 00:00:01 3 SELECT * FROM t1 WHERE c1='2003-01-03 1:2:3' OR c2='2002-03-02 00:00:01'; c1 c2 c3 2002-03-01 00:00:01 2002-03-02 00:00:01 1 UPDATE t1 SET c1='20060101000001' WHERE c1='2003-01-03 1:2:3' OR c2='2002-03-02 00:00:01'; SELECT * FROM t1 WHERE c1='20060101000001' OR c2='020304010030'; c1 c2 c3 2002-03-03 01:00:30 2002-03-04 01:00:30 2 2006-01-01 00:00:01 2002-03-02 00:00:01 1 TRUNCATE TABLE t1; ALTER TABLE t1 CHANGE c1 c1 TIMESTAMP NOT NULL, ADD PRIMARY KEY(c1); INSERT INTO t1 VALUES(NOW(),NOW(),3),(ADDTIME(NOW(),'1 01:01:01'),ADDTIME(NOW(),'1 01:01:01'),4),(ADDTIME(NOW(),'2 01:01:01'),ADDTIME(NOW(),'2 01:01:01'),5),(ADDTIME(NOW(),'3 01:01:01'),ADDTIME(NOW(),'3 01:01:01'),6); INSERT INTO t1 VALUES('1971-01-01 00:00:01','1971-01-01 00:00:01',1),('2038-01-09 03:14:07','2038-01-09 03:14:07',2); SELECT * FROM t1 WHERE c1 <='1971-01-01 00:00:01'; c1 c2 c3 1971-01-01 00:00:01 1971-01-01 00:00:01 1 DELETE FROM t1 WHERE c1 <='1971-01-01 00:00:01'; SELECT * FROM t1 WHERE c1 <='1971-01-01 00:00:01'; c1 c2 c3 SELECT * FROM t1 WHERE c1 >='2038-01-09 03:14:07'; c1 c2 c3 2038-01-09 03:14:07 2038-01-09 03:14:07 2 DELETE FROM t1 WHERE c1 >='2038-01-09 03:14:07'; SELECT * FROM t1 WHERE c1 >='2038-01-09 03:14:07'; c1 c2 c3 SELECT * FROM t1 WHERE c1 > ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 2009-02-28 13:21:14 2009-02-28 13:21:14 6 2009-02-27 13:21:14 2009-02-27 13:21:14 5 DELETE FROM t1 WHERE c1 > ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC LIMIT 2; SELECT * FROM t1 WHERE c1 > ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 SELECT * FROM t1 WHERE c1 <> CURRENT_TIMESTAMP() ORDER BY c1; c1 c2 c3 2009-02-26 13:21:14 2009-02-26 13:21:14 4 DELETE FROM t1 WHERE c1 <> CURRENT_TIMESTAMP() ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1 <> CURRENT_TIMESTAMP() ORDER BY c1; c1 c2 c3 INSERT INTO t1 VALUES('2001-01-01',NOW(),7),(ADDTIME(NOW(),'1 01:01:01'),ADDTIME(NOW(),'1 01:01:01'),8),(ADDTIME(NOW(),'2 01:01:01'),ADDTIME(NOW(),'2 01:01:01'),9),(ADDTIME(NOW(),'3 01:01:01'),ADDTIME(NOW(),'3 01:01:01'),10); SELECT * FROM t1 WHERE c1 < ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 2001-01-01 00:00:00 2009-02-25 12:20:13 7 2009-02-25 12:20:13 2009-02-25 12:20:13 3 2009-02-26 13:21:14 2009-02-26 13:21:14 8 DELETE FROM t1 WHERE c1 < ADDTIME(NOW(),'2 01:01:01') ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1 < ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 2009-02-26 13:21:14 2009-02-26 13:21:14 8 SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 2009-02-26 13:21:14 2009-02-26 13:21:14 8 DELETE FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 DELETE FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; SELECT * FROM t1 WHERE c1 <=> ADDTIME(NOW(),'1 01:01:01') ORDER BY c1 DESC; c1 c2 c3 INSERT INTO t1 VALUES('2001-01-01',NOW(),11),(ADDTIME(NOW(),'1 01:01:01'),ADDTIME(NOW(),'1 01:01:01'),12),(ADDTIME(NOW(),'4 01:01:01'),NULL,13),(ADDTIME(NOW(),'5 01:01:01'),NULL,14); SELECT * FROM t1 WHERE c1 BETWEEN NOW() AND ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 2009-02-26 13:21:14 2009-02-26 13:21:14 12 2009-02-27 13:21:14 2009-02-27 13:21:14 9 DELETE FROM t1 WHERE c1 BETWEEN NOW() AND ADDTIME(NOW(),'2 01:01:01') ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1 BETWEEN NOW() AND ADDTIME(NOW(),'2 01:01:01') ORDER BY c1; c1 c2 c3 SELECT * FROM t1 WHERE c1 IN(NOW(),ADDTIME(NOW(),'3 01:01:01')) ORDER BY c1 DESC; c1 c2 c3 2009-02-28 13:21:14 2009-02-28 13:21:14 10 DELETE FROM t1 WHERE c1 IN(NOW(),ADDTIME(NOW(),'3 01:01:01')) ORDER BY c1 DESC LIMIT 2; SELECT * FROM t1 WHERE c1 IN(NOW(),ADDTIME(NOW(),'3 01:01:01')) ORDER BY c1 DESC; c1 c2 c3 SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1; c1 c2 c3 2009-03-01 13:21:14 NULL 13 2009-03-02 13:21:14 NULL 14 DELETE FROM t1 WHERE c2 IS NULL ORDER BY c2,c1 LIMIT 2; SELECT * FROM t1 WHERE c2 IS NULL ORDER BY c2,c1; c1 c2 c3 INSERT INTO t1 VALUES(ADDTIME(NOW(),'6 01:01:01'),ADDTIME(NOW(),'6 01:01:01'),15),(ADDTIME(NOW(),'7 01:01:01'),NULL,16),(ADDTIME(NOW(),'8 01:01:01'),ADDTIME(NOW(),'8 01:01:01'),17),(ADDTIME(NOW(),'9 01:01:01'),ADDTIME(NOW(),'9 01:01:01'),18),(ADDTIME(NOW(),'10 01:01:01'),ADDTIME(NOW(),'10 01:01:01'),19); SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC; c1 c2 c3 2001-01-01 00:00:00 2009-02-25 12:20:13 11 2009-03-03 13:21:14 2009-03-03 13:21:14 15 2009-03-05 13:21:14 2009-03-05 13:21:14 17 2009-03-06 13:21:14 2009-03-06 13:21:14 18 2009-03-07 13:21:14 2009-03-07 13:21:14 19 DELETE FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC LIMIT 2; SELECT * FROM t1 WHERE c2 IS NOT NULL ORDER BY c2,c1 DESC; c1 c2 c3 2009-03-05 13:21:14 2009-03-05 13:21:14 17 2009-03-06 13:21:14 2009-03-06 13:21:14 18 2009-03-07 13:21:14 2009-03-07 13:21:14 19 SELECT * FROM t1 WHERE c1>=ADDTIME(NOW(),'5 01:01:01') AND c2 < ADDTIME(NOW(),'8 13:25') ORDER BY c1; c1 c2 c3 2009-03-05 13:21:14 2009-03-05 13:21:14 17 DELETE FROM t1 WHERE c1>=ADDTIME(NOW(),'5 01:01:01') AND c2 < ADDTIME(NOW(),'8 13:25') ORDER BY c1 LIMIT 2; SELECT * FROM t1 WHERE c1>=ADDTIME(NOW(),'5 01:01:01') AND c2 < ADDTIME(NOW(),'8 13:25') ORDER BY c1; c1 c2 c3 SELECT * FROM t1 WHERE c1=ADDTIME(NOW(),'9 01:01:01') OR c2=ADDTIME(NOW(),'10 01:01:01'); c1 c2 c3 2009-03-06 13:21:14 2009-03-06 13:21:14 18 2009-03-07 13:21:14 2009-03-07 13:21:14 19 DELETE FROM t1 WHERE c1=ADDTIME(NOW(),'9 01:01:01') OR c2=ADDTIME(NOW(),'10 01:01:01'); SELECT * FROM t1 WHERE c1=ADDTIME(NOW(),'9 01:01:01') OR c2=ADDTIME(NOW(),'10 01:01:01'); c1 c2 c3 SELECT count(*) FROM t1; count(*) 1 TRUNCATE TABLE t1; SELECT count(*) FROM t1; count(*) 0 CREATE TABLE t2(c1 TIMESTAMP NOT NULL PRIMARY KEY, c2 TIMESTAMP, c3 INT); INSERT INTO t1 VALUES('2001-01-01 1:30','2001-01-02 2:30',1),('2001-01-03 3:30','2001-01-02 2:30',2); INSERT INTO t2 VALUES('2001-01-02 2:30','2001-01-03 3:30',1),('2001-01-04 4:30','2001-01-05 5:30',2); SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2001-01-01 01:30:00 2001-01-02 02:30:00 1 2001-01-02 02:30:00 2001-01-03 03:30:00 1 2001-01-03 03:30:00 2001-01-02 02:30:00 2 2001-01-02 02:30:00 2001-01-03 03:30:00 1 DELETE t1,t2 FROM t1,t2 WHERE t2.c1=t1.c2; SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 TRUNCATE TABLE t1; TRUNCATE TABLE t2; INSERT INTO t1 VALUES('2001-01-01 1:30','2001-01-02 2:30',1),('2001-01-03 3:30','2001-01-02 2:30',2); INSERT INTO t2 VALUES('2001-01-02 2:30','2001-01-03 3:30',1),('2001-01-04 4:30','2001-01-05 5:30',2); SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 2001-01-01 01:30:00 2001-01-02 02:30:00 1 2001-01-02 02:30:00 2001-01-03 03:30:00 1 2001-01-03 03:30:00 2001-01-02 02:30:00 2 2001-01-02 02:30:00 2001-01-03 03:30:00 1 DELETE FROM a1, a2 USING t1 AS a1 INNER JOIN t2 AS a2 WHERE a2.c1=a1.c2; SELECT * FROM t1,t2 WHERE t2.c1=t1.c2; c1 c2 c3 c1 c2 c3 DROP TABLE t1,t2;