Re: "NOT IN" substantially slower in 9.0.2 than 8.3.13 - NOT EXISTS runs fast in both 8.3.13 and 9.0.2

From: Mladen Gogala <mladen(dot)gogala(at)vmsinfo(dot)com>
To: Achilleas Mantzios <achill(at)matrix(dot)gatewaynet(dot)com>
Cc: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: "NOT IN" substantially slower in 9.0.2 than 8.3.13 - NOT EXISTS runs fast in both 8.3.13 and 9.0.2
Date: 2011-01-17 16:47:47
Message-ID: 4D3472B3.2060108@vmsinfo.com
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Achilleas Mantzios wrote:
> From the whole set of the tests involved, it seems like the "NOT IN" version of the query runs slow
> in any postgresql 9.0.2 tested.
>
Not only that, it will run slower even using Oracle 11.2 or MySQL 5.5.

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Mladen Gogala
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