DROP TABLE IF EXISTS t1; CREATE TABLE t1(c1 DATE NOT NULL, c2 DATE NOT NULL, c3 DATE NOT NULL, PRIMARY KEY(c1,c2,c3)); SET TIMESTAMP=1171346973; INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),NOW()); 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 'c3' at row 1 INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),ADDTIME(NOW(),'1 01:01:01')); 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 'c3' at row 1 INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),ADDTIME(NOW(),'1 01:01:01'),NOW()); 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 'c3' at row 1 INSERT INTO t1 (c1,c2,c3) VALUES(ADDTIME(NOW(),'1 01:01:01'),NOW(),NOW()); 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 'c3' at row 1 INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),NOW()); ERROR 23000: Duplicate entry '2007-02-13-2007-02-13-2007-02-13' for key 'PRIMARY' INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),ADDTIME(NOW(),'1 01:01:01')); ERROR 23000: Duplicate entry '2007-02-13-2007-02-13-2007-02-14' for key 'PRIMARY' SELECT * FROM t1; c1 c2 c3 2007-02-13 2007-02-13 2007-02-13 2007-02-13 2007-02-13 2007-02-14 2007-02-13 2007-02-14 2007-02-13 2007-02-14 2007-02-13 2007-02-13 DROP TABLE t1; CREATE TABLE t1(c1 YEAR NOT NULL, c2 YEAR NOT NULL, c3 YEAR NOT NULL, PRIMARY KEY(c1,c2,c3)); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,1999); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,2000); INSERT INTO t1 (c1,c2,c3) VALUES(1999,2000,1999); INSERT INTO t1 (c1,c2,c3) VALUES(2000,1999,1999); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,1999); ERROR 23000: Duplicate entry '1999-1999-1999' for key 'PRIMARY' INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,2000); ERROR 23000: Duplicate entry '1999-1999-2000' for key 'PRIMARY' SELECT * FROM t1; c1 c2 c3 1999 1999 1999 1999 1999 2000 1999 2000 1999 2000 1999 1999 DROP TABLE t1; CREATE TABLE t1(c1 TIME NOT NULL, c2 TIME NOT NULL, c3 TIME NOT NULL, PRIMARY KEY(c1,c2,c3)); SET TIMESTAMP=1171346973; INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),NOW()); INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),ADDTIME(NOW(),'1 01:01:01')); INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),ADDTIME(NOW(),'1 01:01:01'),NOW()); INSERT INTO t1 (c1,c2,c3) VALUES(ADDTIME(NOW(),'1 01:01:01'),NOW(),NOW()); INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),NOW()); ERROR 23000: Duplicate entry '09:09:33-09:09:33-09:09:33' for key 'PRIMARY' INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),ADDTIME(NOW(),'1 01:01:01')); ERROR 23000: Duplicate entry '09:09:33-09:09:33-10:10:34' for key 'PRIMARY' SELECT * FROM t1; c1 c2 c3 09:09:33 09:09:33 09:09:33 09:09:33 09:09:33 10:10:34 09:09:33 10:10:34 09:09:33 10:10:34 09:09:33 09:09:33 DROP TABLE t1; CREATE TABLE t1(c1 YEAR NOT NULL, c2 YEAR NOT NULL, c3 YEAR NOT NULL, PRIMARY KEY(c1,c2,c3)); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,1999); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,2000); INSERT INTO t1 (c1,c2,c3) VALUES(1999,2000,1999); INSERT INTO t1 (c1,c2,c3) VALUES(2000,1999,1999); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,1999); ERROR 23000: Duplicate entry '1999-1999-1999' for key 'PRIMARY' INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,2000); ERROR 23000: Duplicate entry '1999-1999-2000' for key 'PRIMARY' SELECT * FROM t1; c1 c2 c3 1999 1999 1999 1999 1999 2000 1999 2000 1999 2000 1999 1999 DROP TABLE t1; CREATE TABLE t1(c1 DATETIME NOT NULL, c2 DATETIME NOT NULL, c3 DATETIME NOT NULL, PRIMARY KEY(c1,c2,c3)); SET TIMESTAMP=1171346973; INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),NOW()); INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),ADDTIME(NOW(),'1 01:01:01')); INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),ADDTIME(NOW(),'1 01:01:01'),NOW()); INSERT INTO t1 (c1,c2,c3) VALUES(ADDTIME(NOW(),'1 01:01:01'),NOW(),NOW()); INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),NOW()); ERROR 23000: Duplicate entry '2007-02-13 09:09:33-2007-02-13 09:09:33-2007-02-13 09:09:33' for key 'PRIMARY' INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),ADDTIME(NOW(),'1 01:01:01')); ERROR 23000: Duplicate entry '2007-02-13 09:09:33-2007-02-13 09:09:33-2007-02-14 10:10:34' for key 'PRIMARY' SELECT * FROM t1; c1 c2 c3 2007-02-13 09:09:33 2007-02-13 09:09:33 2007-02-13 09:09:33 2007-02-13 09:09:33 2007-02-13 09:09:33 2007-02-14 10:10:34 2007-02-13 09:09:33 2007-02-14 10:10:34 2007-02-13 09:09:33 2007-02-14 10:10:34 2007-02-13 09:09:33 2007-02-13 09:09:33 DROP TABLE t1; CREATE TABLE t1(c1 YEAR NOT NULL, c2 YEAR NOT NULL, c3 YEAR NOT NULL, PRIMARY KEY(c1,c2,c3)); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,1999); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,2000); INSERT INTO t1 (c1,c2,c3) VALUES(1999,2000,1999); INSERT INTO t1 (c1,c2,c3) VALUES(2000,1999,1999); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,1999); ERROR 23000: Duplicate entry '1999-1999-1999' for key 'PRIMARY' INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,2000); ERROR 23000: Duplicate entry '1999-1999-2000' for key 'PRIMARY' SELECT * FROM t1; c1 c2 c3 1999 1999 1999 1999 1999 2000 1999 2000 1999 2000 1999 1999 DROP TABLE t1; CREATE TABLE t1(c1 TIMESTAMP NOT NULL, c2 TIMESTAMP NOT NULL, c3 TIMESTAMP NOT NULL, PRIMARY KEY(c1,c2,c3)); SET TIMESTAMP=1171346973; INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),NOW()); INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),ADDTIME(NOW(),'1 01:01:01')); INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),ADDTIME(NOW(),'1 01:01:01'),NOW()); INSERT INTO t1 (c1,c2,c3) VALUES(ADDTIME(NOW(),'1 01:01:01'),NOW(),NOW()); INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),NOW()); ERROR 23000: Duplicate entry '2007-02-13 09:09:33-2007-02-13 09:09:33-2007-02-13 09:09:33' for key 'PRIMARY' INSERT INTO t1 (c1,c2,c3) VALUES(NOW(),NOW(),ADDTIME(NOW(),'1 01:01:01')); ERROR 23000: Duplicate entry '2007-02-13 09:09:33-2007-02-13 09:09:33-2007-02-14 10:10:34' for key 'PRIMARY' SELECT * FROM t1; c1 c2 c3 2007-02-13 09:09:33 2007-02-13 09:09:33 2007-02-13 09:09:33 2007-02-13 09:09:33 2007-02-13 09:09:33 2007-02-14 10:10:34 2007-02-13 09:09:33 2007-02-14 10:10:34 2007-02-13 09:09:33 2007-02-14 10:10:34 2007-02-13 09:09:33 2007-02-13 09:09:33 DROP TABLE t1; CREATE TABLE t1(c1 YEAR NOT NULL, c2 YEAR NOT NULL, c3 YEAR NOT NULL, PRIMARY KEY(c1,c2,c3)); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,1999); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,2000); INSERT INTO t1 (c1,c2,c3) VALUES(1999,2000,1999); INSERT INTO t1 (c1,c2,c3) VALUES(2000,1999,1999); INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,1999); ERROR 23000: Duplicate entry '1999-1999-1999' for key 'PRIMARY' INSERT INTO t1 (c1,c2,c3) VALUES(1999,1999,2000); ERROR 23000: Duplicate entry '1999-1999-2000' for key 'PRIMARY' SELECT * FROM t1; c1 c2 c3 1999 1999 1999 1999 1999 2000 1999 2000 1999 2000 1999 1999 DROP TABLE t1;