Article View: borland.public.interbase.sql
Article #813Re: performance
From: Svein Erling Tysvær
Date: Thu, 10 May 2007 22:00
Date: Thu, 10 May 2007 22:00
54 lines
2514 bytes
2514 bytes
OK, I'll guess - try to remove the use of the id_gestuine index like
this (assuming that is the least selective index):
select
sum(stoc_temporar.stoc) as stoc,
produse.denumire
from produse
inner join stoc_temporar on (stoc_temporar.id_produs=produse.id_produs)
where
produse.id_sortiment=3 and
stoc_temporar.id_gestiune+0=1
group by
produse.denumire
order by
produse.denumire
HTH,
Set
Tiberiu Horvath wrote:
> I have the following query, that takes 6..8 seconds on a large (4000 records
> in stoc_temporar) database. Is there a way to speed up this ?
>
>
> Thank you in advance,
>
> Tiberiu
>
>
> select
> sum(stoc_temporar.stoc) as stoc,
> produse.denumire
> from produse
> inner join stoc_temporar on (stoc_temporar.id_produs=produse.id_produs)
> where
> produse.id_sortiment=3 and
> stoc_temporar.id_gestiune=1
> group by
> produse.denumire
> order by
> produse.denumire
>
>
> PLAN JOIN (PRODUSE ORDER DENUMIRE_IDX INDEX (FK_PRODUSE_REFERENCE_SORTIMEN),
> STOC_TEMPORAR INDEX (FK_STOC_TEM_REFERENCE_PRODUSE,
> FK_STOC_TEM_REFERENCE_GESTIUNE)):
> PLAN JOIN (PRODUSE ORDER DENUMIRE_IDX INDEX (FK_PRODUSE_REFERENCE_SORTIMEN),
> STOC_TEMPORAR INDEX (FK_STOC_TEM_REFERENCE_PRODUSE,
> FK_STOC_TEM_REFERENCE_GESTIUNE))
>
> Adapted plan:
> PLAN JOIN (PRODUSE ORDER DENUMIRE_IDX INDEX (FK_PRODUSE_REFERENCE_SORTIMEN),
> STOC_TEMPORAR INDEX (FK_STOC_TEM_REFERENCE_PRODUSE,
> FK_STOC_TEM_REFERENCE_GESTIUNE))
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X-Google-Thread: 114a0e,65a795d106dce3a2 X-Google-Attributes: gid114a0e,public X-Google-Language: ENGLISH,ASCII-7-bit Date: Fri, 11 May 2007 00:00:59 +0200 From: Svein Erling Tysvær <svein.erling.tysvaer@kreftregisteret.no> User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 Newsgroups: borland.public.interbase.sql Subject: Re: performance References: <464355cc@newsgroups.borland.com> In-Reply-To: <464355cc@newsgroups.borland.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Antivirus: avast! (VPS 000739-1, 10.05.2007), Outbound message X-Antivirus-Status: Clean NNTP-Posting-Host: 80.203.64.24 Message-ID: <46439619$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1178834457 80.203.64.24 (10 May 2007 15:00:57 -0700) Lines: 54 Path: arc1-ca.pugleaf.net!g2news1.google.com!news2.google.com!news.glorb.com!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail