Re: [HACKERS] Reminder: Indices are not used - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: [HACKERS] Reminder: Indices are not used
Date
Msg-id 199803271926.OAA18458@candle.pha.pa.us
Whole thread Raw
In response to Reminder: Indices are not used  (Ulrich Voss <voss@vocalweb.de>)
List pgsql-hackers
> test=> explain SELECT * from Trans, Kurse where
> Kurse.wpk_nr=Trans.wpk_nr and Trans.spieler_nr=3;
> NOTICE:  QUERY PLAN:
>
> Hash Join  (cost=408.60 size=1364 width=103)
>   ->  Seq Scan on kurse  (cost=238.61 size=4958 width=65)
>   ->  Hash  (cost=0.00 size=0 width=0)
>         ->  Index Scan on trans  (cost=3.41 size=29 width=38)
>
> I get the seq scan, which slows the query down tremendously compared to
> 6.2.

This does help.  Vadim, can you check this?

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