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Well, it doesn't matter our shop doesn't do anything that's been described in this subject. Which would explain my errant answers. I realized that my solution wasn't correct and corrected my answer which was correct just not as efficient as using the EXISTS clause Michael Schutte Work 614-492-7419 email michael_schutte@xxxxxxxxxxxx "Hauser, Birgitta" <Birgitta.Hauser@ To LP-GMBH.com> "'Midrange Systems Technical Sent by: Discussion'" midrange-l-bounce <midrange-l@xxxxxxxxxxxx> s@xxxxxxxxxxxx cc Subject 04/04/2006 02:41 AW: SQL - Updates with joins AM Please respond to Midrange Systems Technical Discussion <midrange-l@midra nge.com> Hi Michael, joined logical files are not updateable, either. And you never should use a DDS-described logcial file in an SQL-statement. All SQL-statements where DDS described logical files are specified get rerouted to the old (classic) Query Engine (CQE). Not only the advantages of the new (SQL) Query Engine (SQE) cannot be exploited, this rerouting may cost up to 10-15% performance. With release V5R4M0 (or even with some PTFs in release V5R3M0) instead of triggers can be used to update SQL views that join several tables. Without registering an instead of trigger for the view, an update of the view will fail. In the following article you'll find a nice example: Perform the Impossible: Update a Multi-Table View using INSTEAD OF Triggers http://www.itjungle.com/fhg/fhg030806-story01.html Birgitta -----Ursprüngliche Nachricht----- Von: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] Im Auftrag von Michael_Schutte@xxxxxxxxxxxx Gesendet: Montag, 3. April 2006 21:03 An: Midrange Systems Technical Discussion Betreff: RE: SQL - Updates with joins I was talking about creating a Logical file but stated view instead. Michael Schutte Work 614-492-7419 email michael_schutte@xxxxxxxxxxxx "Elvis Budimlic" <ebudimlic@center fieldtechnology.c To om> "'Midrange Systems Technical Sent by: Discussion'" midrange-l-bounce <midrange-l@xxxxxxxxxxxx> s@xxxxxxxxxxxx cc Subject 04/03/2006 02:55 RE: SQL - Updates with joins PM Please respond to Midrange Systems Technical Discussion <midrange-l@midra nge.com> Joined file SQL view is likely to be read-only, hence it would not updateable. John needs to review UPDATE syntax a bit as there is no FROM in the base UPDATE syntax (there is in subselects, which are often used in UPDATEs for join purposes). I'll give it a go for your UPDATE statement, but make sure you test it first John: UPDATE rugd80dat.asbacpp r1 SET bai1tx = 'N', bai2tx = 'N' WHERE (r1.baartx = 'APV' or r1.baartx = 'MPV' or r1.baartx = 'SPV' or r1.baartx = 'EPV') AND r1.bai1tx = ' ' and r1.bai2tx = ' ' AND EXISTS (SELECT 1 FROM rugd80dat.pmsp0200 r2 WHERE r1.baartx = r2.symbol and r1.baastx = r2.policy0num and r1.baadnb = r2.module AND r2.trans0stat = 'V' and r2.renewal0cd = '1') Elvis -----Original Message----- Subject: Re: SQL - Updates with joins I've never seen an update statement with a FROM clause or a JOIN for that matter. I suggest creating a view that combines the two files and then run the update over the new view. Michael Schutte Work 614-492-7419 email michael_schutte@xxxxxxxxxxxx "John Candidi" <jacandidi@rutger sinsurance.com> To Sent by: <midrange-l@xxxxxxxxxxxx> midrange-l-bounce cc s@xxxxxxxxxxxx Subject SQL - Updates with joins 04/03/2006 02:18 PM Please respond to Midrange Systems Technical Discussion <midrange-l@midra nge.com> I am having a problem generating the correct SQL script run in iSeries Navigator. This is what I have so far: Update rugd80dat.asbacpp set bai1tx = 'N', bai2tx = 'N' from rugd80dat.asbacpp r1,rugd80dat.pmsp0200 r2 where (r1.baartx = r2.symbol and r1.baastx = r2.policy0num and r1.baadnb = r2.module) and (r1.baartx = 'APV' or r1. baartx = 'MPV' or r1.baartx = 'SPV' or r1.baartx = 'EPV') and (r1.bai1tx = ' ' and r1.bai2tx = ' ') and (r2.trans0stat = 'V' and r2.renewal0cd = '1') When run as a select statement, it returns the correct rows. When changed to do the actual update, it reports an unexpected 'from'. Any recommendations? I tried with a 'where exists' with a select subquery, but it ended up hitting all the rows in the asbacpp table, not just the handful in the query result. John A Candidi Rutgers Insurance Companies IT Director - AS/400 Manager 856-779-2274 -- This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/midrange-l or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l. -- This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/midrange-l or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l. -- This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/midrange-l or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l.
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