I am not updating 1 record.
I have : WHERE m.caseid = tblcase.caseid AND m.clientnum::text = tblcase.clientnum::text)
Which should do the aggregate on the record that is being updated (least as I understood it).
It should update all record in case with either 0 if there are no merchandise records or do a sum of the merch records for the case being updated.
Joel
I also never heard back on the merge join issue (why do I need to specify them off on one machine and it runs faster on the other).
I am guessing it is memory related and config related, but I am about to give up on postgres as I am just not getting all my views to run fast enough.
You guys could say my views are bad SQL design etc, but they run fine in MSSQL. I don’t mind visiting each one to make them better, but I am just not able to increase the speed on all of them. The last one about assoc finally did run in 3 secs with merge joins off which is pretty fast, but now I have others that seem pretty simple to me and yet run very slow.
You're most probably missing a Where clause after the parentensis. see:
-----Original Message-----
From: Joel Fradkin [mailto:jfradkin@wazagua.com]
Sent: Dienstag, 19. April 2005 16:06
To: pgsql-sql@postgresql.org
Subject: [SQL] trying to do an update a bit confused.
update tblcase set merchandisetotal =
(
COALESCE(( SELECT sum(m.quantity::numeric * m.amount) AS merchandiseamount
FROM tblmerchandise m
WHERE m.caseid = tblcase.caseid AND m.clientnum::text = tblcase.clientnum::text), 0.0)
)
WHERE <condtion that selects one record>;
I tried running the above and it wants to do a sum on all the records in tblcase instead of just the one being updated, what am I doing wrong?
Joel Fradkin
