Posted by Geradeaus on 10/11/27 11:36

I have searched but have not yet found how I can resolve the following
problem :

SELECT adId,
CASE
WHEN adId =1 THEN cityId
WHEN adId =2 THEN regionId
END AS extraField
FROM ad
WHERE extraField <> 0

The problem is "extraField" cannot be used in the WHERE clause... I am using
mySQL 4.1

Thanks in advance!

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