| From: | Andreas Kretschmer <akretschmer(at)despammed(dot)com> |
|---|---|
| To: | pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: [despammed] Balance Calculation |
| Date: | 2005-05-22 08:17:53 |
| Message-ID: | 20050522081753.GA5136@webserv.wug-glas.de |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-sql |
am 22.05.2005, um 12:15:56 +0800 mailte Muhyiddin A.M Hayat folgendes:
Nice SQL ;-)
>
> everything is ok, but when record > 1000000 that query eat all my cpu
> process and take a long time, i have wait for 3 mimutes but query
I think, because for every record in your result is a full table scan
required to calculate the balance.
>
> can you help me how to fix them.
> Can I using function to fix them (how?)
It is possible to create a extra table for the balance and a trigger for
insert/update that calculates the balance for the transactions-table?
I think, this should solve your perfomance-problem.
Regards, Andreas
--
Andreas Kretschmer (Kontakt: siehe Header)
Heynitz: 035242/47212, D1: 0160/7141639
GnuPG-ID 0x3FFF606C http://wwwkeys.de.pgp.net
=== Schollglas Unternehmensgruppe ===
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Andreas Kretschmer | 2005-05-22 08:42:50 | Re: [despammed] Balance Calculation |
| Previous Message | Muhyiddin A.M Hayat | 2005-05-22 04:15:56 | Balance Calculation |