Sounds like 'Companynumber' and 'Type' should be either a compound Primary Key, or a unique index. Which begs the question of what 'Id' is doing - perhaps you don't need it.
peter -----Original Message----- Sent: Friday, August 29, 2003 10:39 AM To: Multiple recipients of list ORACLE-L Hallo, I would like to gets ome help on this: I have this table Id Companynumber First Name LastName Type 1 123 Jim Andersson 1 2 234 Tom Perkins 2 3 565 Henry Ford 1 I would like to have a constraint so when I try to add and the same companynumber that already exists(for instance 234) I am not allowed to do this if the filed Type has the value 1. So if I add a companynumber which already exists and the Type is 2, then I should be allowed to add this companynumber. Maybe this is simple but woul dreally appreciate some help onhow to write this. Roland -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). ********************************************************************* This e-mail message, and any files transmitted with it, are confidential and intended solely for the use of the addressee. If this message was not addressed to you, you have received it in error and any copying, distribution or other use of any part of it is strictly prohibited. Any views or opinions presented are solely those of the sender and do not necessarily represent those of the British Geological Survey. The security of e-mail communication cannot be guaranteed and the BGS accepts no liability for claims arising as a result of the use of this medium to transmit messages from or to the BGS. . http://www.bgs.ac.uk ********************************************************************* -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Robson, Peter INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
