--- Scott Purcell <[EMAIL PROTECTED]> wrote:
> I occasionally run into issues where I would like to ensure that the > values across two or three columns are not duplicated. At work we use > Oracle, and I see that they add constraints when creating the > columns. I > am running mysql 5.0 and was hoping someone could give me the simple > explanation of how to create constraints, and whether indexes' are > needed for these or not. > > > > I have tried reading the docs in this regard, but because I do not > understand the concept I am having trouble translating to the actual > creation of these. > > > > Thanks, > > Scott > > Hi Scott, What you want to do is called a CHECK CONSTRAINT and is not yet part of MySQL. However, now that MySQL has STORED PROCEDURES and FUNCTIONS it should be a matter of a revision or two before CHECK CONSTRAINTS __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
