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Re: Analyzer is clueless

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To: josh@xxxxxxxxxxxx
Subject: Re: Analyzer is clueless
From: Tom Lane <tgl@xxxxxxxxxxxxx>
Date: Wed, 17 Nov 2004 20:57:44 -0500
Cc: pgsql-performance@xxxxxxxxxxxxxx, "Jim C. Nasby" <decibel@xxxxxxxxxxx>, Simon Riggs <simon@xxxxxxxxxxxxxxx>, David Brown <time@xxxxxxxxxxxxxx>
Comments: In-reply-to Josh Berkus <josh@xxxxxxxxxxxx> message dated "Wed, 17 Nov 2004 17:41:16 -0800"
In-reply-to: <200411171741.16515.josh@xxxxxxxxxxxx>
References: <20041117160824.B694D3A3ECC@xxxxxxxxxxxxxxxxxxx> <1100730768.4113.7709.camel@xxxxxxxxxxxxxxxxxxxxx> <20041118002008.GL80532@xxxxxxxxxxx> <200411171741.16515.josh@xxxxxxxxxxxx>

>> I've seen cases where it seems the
>> planer doesn't think it'll be getting a unique value or a small set of
>> values even though stats indicates that it should be.

A test case exhibiting the problem would be helpful.

			regards, tom lane

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References:
- Analyzer is clueless
  - From: David Brown
- Re: Analyzer is clueless
  - From: Simon Riggs
- Re: Analyzer is clueless
  - From: Jim C. Nasby
- Re: Analyzer is clueless
  - From: Josh Berkus

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