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Re: When stats trash your performance

From: stephen booth <stephenbooth.uk_at_gmail.com>
Date: Wed, 7 Dec 2005 22:03:40 +0000
Message-ID: <687bf9c40512071403g772c73d0i@mail.gmail.com>


On 07/12/05, Allen, Brandon <Brandon.Allen_at_oneneck.com> wrote:
>
> A problem I've run into before is people running the old ANALYZE statements without specifying a sample size. This will default to a sample size of only 1064 rows (regardless of tables size)!
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>
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That could be it, thanks. Most of the core tables are pretty large (in the hundreds of thousands of rows) so 1064 rows would be a tiny sample, less than 1%.

I'll try to get them to let me reanalyze the tables with a decent sample size, 5 or 10%.

Stephen

--
It's better to ask a silly question than to make a silly assumption.

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Received on Wed Dec 07 2005 - 16:03:54 CST

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