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Re: Optimizing Bitmap Heap Scan.

From: niraj patel <npatel(at)gridsolv(dot)com>
To: Grzegorz Jaśkiewicz <gryzman(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Optimizing Bitmap Heap Scan.
Date: 2009-12-08 13:50:52
Message-ID: 187141.41592.qm@web1202.biz.mail.gq1.yahoo.com (view raw or flat)
Thread:
Lists: pgsql-performance
Hi gryzman,

I have run vacuum full analyze on the cmrules tables. The version of pstgres is 8.2.13. How should I change stats to 100 ?

Thanks



________________________________
From: Grzegorz Jaśkiewicz <gryzman(at)gmail(dot)com>
To: niraj patel <npatel(at)gridsolv(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Sent: Tue, 8 December, 2009 7:12:49 PM
Subject: Re: [PERFORM] Optimizing Bitmap Heap Scan.

it looks like it might choose wrong plan, cos it gets the stats wrong. 
Try increasing number of stats to 100. 
Btw, what version it is ?

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Next:From: Matthew WakelingDate: 2009-12-08 14:03:38
Subject: Re: Optimizing Bitmap Heap Scan.
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