Re: trying to do an update a bit confused.

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(at)wazagua(dot)com]
Sent: Dienstag, 19. April 2005 16:06
To: pgsql-sql(at)postgresql(dot)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