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Error checking for unique value in database table?

Posted by Phil Latio on 05/23/07 05:18

I am inserting data into user table which contains 5 fields, sounds simple
enough normally but 2 of the fields are designated as UNIQUE. If someone
does enter a value which already exists, how do I capture this specific
error?

Would it make more sense to actually run a SELECT query first and if that
returned a result, then I use that for error checking and don't run insert
until select returns nothing?

Cheers

Phil

 

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