2010/1/25 Yang Zhang <yanghates...@gmail.com>: > Right, I saw the docs. I'm fine with creating an index on it, but the > only way I've successfully created a table with auto_increment is by > making it a primary key. And I still don't understand why this > requirement is there in the first place.
Non-primary key works for me, as documented: ---------------------------------->8-------------------------------- mysql> create table test_ai (i int PRIMARY KEY, c int auto_increment, index(c)); Query OK, 0 rows affected (0,07 sec) mysql> desc test_ai; +-------+---------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-------+---------+------+-----+---------+----------------+ | i | int(11) | NO | PRI | NULL | | | c | int(11) | NO | MUL | NULL | auto_increment | +-------+---------+------+-----+---------+----------------+ 2 rows in set (0,00 sec) mysql> insert into test_ai (i) values (100), (200); Query OK, 2 rows affected (0,00 sec) Records: 2 Duplicates: 0 Warnings: 0 mysql> select * from test_ai; +-----+---+ | i | c | +-----+---+ | 100 | 1 | | 200 | 2 | +-----+---+ 2 rows in set (0,00 sec) ---------------------------------->8-------------------------------- Regards, -- Jaime Crespo MySQL & Java Instructor Warp Networks <http://warp.es> -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
