From: | LAMBEAU Bernard <blambeau(at)gmail(dot)com> |
---|---|
To: | Andreas Kretschmer <akretschmer(at)despammed(dot)com>, pgsql-sql(at)postgresql(dot)org |
Subject: | Re: [despammed] Balance Calculation |
Date: | 2005-05-22 09:03:19 |
Message-ID: | 42d8505e0505220203bd3cb94@mail.gmail.com |
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Lists: | pgsql-sql |
Do you tried to create an index on the account column ?
I think it may help.
Regards
-------------------------------------------------------------------------------------
Bernard LAMBEAU
Département d'Ingénierie Informatique
Université Catholique de Louvain-La-Neuve (Belgium)
On 5/22/05, Andreas Kretschmer <akretschmer(at)despammed(dot)com> wrote:
> am 22.05.2005, um 10:17:53 +0200 mailte Andreas Kretschmer folgendes:
> > > 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.
>
> Sorry, this is not the solution for your problem, because this provide
> only the actual balance for a single account, but not the history.
>
> Mmh...
>
> A extra table with the oid and the balance for every row in
> transactions. Then you can do a index scan, but you need also a trigger
> that insert every transaction in this table and calculate the balance.
>
>
>
>
> Regards
> --
> Andreas Kretschmer (Kontakt: siehe Header)
> Heynitz: 035242/47212, D1: 0160/7141639
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