Your auto-increment could be effectively a row number. Otherwise there is this technique with user variables:
SET @rownum := 0; SELECT @rownum:=...@rownum+1 as ROWNUM, ... FROM ... ; Regards, Gavin Towey -----Original Message----- From: Tom Goring [mailto:tom.gor...@gmail.com] Sent: Friday, February 05, 2010 9:37 AM To: mysql@lists.mysql.com Subject: Business Key Generation Hi, I have a table that I need to migrate some data into: CREATE TABLE `employee` ( `employeeid` bigint(20) NOT NULL auto_increment, .. `reference` varchar(20) default NULL, `fkcompanyid` bigint(20) default NULL, PRIMARY KEY (`employeeid`), KEY `FK4722E6AE82D7E095` (`fkcompanyid`), CONSTRAINT `FK4722E6AE82D7E095` FOREIGN KEY (`fkcompanyid`) REFERENCES `company` (`companyid`), ... ) ENGINE=InnoDB AUTO_INCREMENT=1000000000001585 DEFAULT CHARSET=latin1 | My question is I want to generate a reference business key (a number) as the migrated data is blank. something like update employee set reference = ROWNUM where fkcompanyid = X I think in Oracle ROWNUM would help me do this. I.e. generate a reference based on the position in the result set. any Ideas ? -- Tom Goring This message contains confidential information and is intended only for the individual named. If you are not the named addressee, you are notified that reviewing, disseminating, disclosing, copying or distributing this e-mail is strictly prohibited. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any loss or damage caused by viruses or errors or omissions in the contents of this message, which arise as a result of e-mail transmission. [FriendFinder Networks, Inc., 220 Humbolt court, Sunnyvale, CA 94089, USA, FriendFinder.com
