Article View: borland.public.interbase.sql
Article #810performance
From: Tiberiu Horvath
Date: Thu, 10 May 2007 17:26
Date: Thu, 10 May 2007 17:26
35 lines
1870 bytes
1870 bytes
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))
Technical Details
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