> > I have a table with a PRIMARY KEY on id field, whos > > evalue is populated usin auto_increment. > > > > > > CREATE TABLE `key` ( > > `id` int(10) unsigned NOT NULL AUTO_INCREMENT, > > `sid` smallint(4) unsigned NOT NULL DEFAULT '0', > > `email` varchar(128) NOT NULL DEFAULT '', > > PRIMARY KEY (`id`), > > UNIQUE KEY `email` (`email`) > > ) ENGINE=InnoDB; > > > > Question: > > > > 1) > > When I INSERT a row is there any way to be able in the > > same INSERT statement (without doing an UPDATE after > > the insert) to populate the field `sid`, which is base > > on the value that the field `id` gets (e.g. sid= MOD > > (id, 20)) > > Sounds like an excellent case for a TRIGGER.
Sorry, I think I'm wrong here -- This would only work if NEW.ID already has a value when the BEFORE INSERT trigger get's called, but I think it has not, as the "id" column would only be filled when doing the actual insert, and not before. You might wanna try that out. AutoInc stinks. Always does :-) Martijn Tonies Database Workbench - development tool for MySQL, and more! Upscene Productions http://www.upscene.com My thoughts: http://blog.upscene.com/martijn/ Database development questions? Check the forum! http://www.databasedevelopmentforum.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
