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  3. August 2007

Re: SQL Trick.

Been available for years in DB2 for LUW. Relatively recent (V5R3 or V5R4 I think, don't recall offhand) change for the System i. Was she at RPG World? I did explain it there... ;-)


Alan Campin wrote:
We have a new programmer in our office and she created this query. The thing that blew my mind was the set using in effect a list. I thought you could only update a single field on a select but it works.
Update PLNREQ a
Set (PPLANIB,
PITCLS) = (Select b.PLANIB, b.ITCLS From ITEMBL b Where a.PITEM = b.ITNBR And a.PWH = b.HOUSE) Where a.PPLANIB = ' ' And a.PITCLS = ' '
The trick seems to be putting the brackets around the list of fields to update.
Anybody seen this before? SQL never ceases to amaze me.



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