Subject Re: [firebird-support] Re: Optimizing in (...) Statements
Author Arno Brinkman
Hi Michael,

> At
>
> http://download.microcom.dk/T
>
> there is an packed DB to download.
>
> Size: 758 K

I think the same problem as by m_quadrat, but also a second problem that the
optimizer chooses wrong join order.
The query below should run fast, because it works around the currently
existing problems:

SELECT
SUM( VARER_DETAIL.ANTALSTK ) ANTALSTK,
SUM( VARER_DETAIL.BEH_KOSTPRIS ) BEH_KOSTPRIS,
SUM( VARER_DETAIL.BEH_SALGSPRIS ) SALGSPRIS,
SUM( VARER_DETAIL.BEH_SALGSPRISMOMS ) SALGSPRISMOMS,
VARER_DETAIL.AFDELING_ID,
VARER.LEVERID GRUP2,
LEVERANDOERER.V509Index GRUP2509,
Afdeling.Navn,
Afdeling.AfdInfo
FROM
VARER
JOIN Varer_Detail ON
((Varer_Detail.VarePlu_ID = Varer.Plu_Nr || '' and
Varer_detail.Afdeling_ID = '001') or
(Varer_Detail.VarePlu_ID = Varer.Plu_Nr || '' and
Varer_detail.Afdeling_ID = '002'))
JOIN Afdeling on (Afdeling.Afdelingsnummer = Varer_Detail.Afdeling_ID)
JOIN LEVERANDOERER on (Varer.LeverID=LEVERANDOERER.Navn)
GROUP BY
VARER_DETAIL.AFDELING_ID,
LEVERANDOERER.V509Index,
VARER.LEVERID,
Afdeling.Navn,
Afdeling.AfdInfo


Regards,
Arno Brinkman
ABVisie

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