On 22-Jan-2004 Michael McTernan wrote: > Hi there, > > Thanks for your quick response! > >> Why all the locks, temp tables and updates? You can just do: >> >> SELECT >> CASE WHEN B.y IS NULL THEN A.x ELSE B.y END AS newX >> FROM >> A LEFT JOIN B ON A.x = B.x > > Spot on - many thanks! I wasn't aware of the CASE function, but I've > certainly learnt something now :) >
Also look at SELECT COALESCE(B.y, A.x) ... Regards, -- Don Read [EMAIL PROTECTED] -- It's always darkest before the dawn. So if you are going to steal the neighbor's newspaper, that's the time to do it. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
