Re: PG does not use my index - Mailing list pgsql-admin

From Rickard Sjöström
Subject Re: PG does not use my index
Date
Msg-id 200704030539.l335dDh1011778@mi1.bluebottle.com
Whole thread Raw
In response to Re: PG does not use my index  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-admin
Hi!
I eventually tried with an 'vacuum analyse' which made postgres to use my index and the query was completed in 200 ms
(instedof tens of seconds) and I was happy again! 

Thanks!

/Rickard

Citerar Tom Lane <tgl@sss.pgh.pa.us>:

> Rickard =?iso-8859-1?b?U2r2c3Ry9m0=?=
> <rickard.sjostrom@bluebottle.com> writes:
> > fast db:
> > -------------------------
> >  ->  Index Scan using testcase_b_bid_index on testcase
> (cost=0.00..1656.82 rows=426 width=38) (never executed)"
> > -------------------------
>
> > slow db:
> > -------------------------
> > ->  Seq Scan on testcase  (cost=0.00..2896.42 rows=33242
> width=64) (actual time=77.027..791.014 rows=37093 loops=1)"
> > -------------------------
>
> Let's see the query and the *whole* explain analyze output, not the
> part
> you (mistakenly) think is important.
>
>             regards, tom lane
>


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