Re: Explain returns different number of rows

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От Christophe Pettus
Тема Re: Explain returns different number of rows
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Msg-id 6B906119-82AD-49FC-A47D-8652FD03D936@thebuild.com
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Ответ на Explain returns different number of rows  (Vince McMahon <sippingonesandzeros@gmail.com>)
Ответы Re: Explain returns different number of rows  ("Peter J. Holzer" <hjp-pgsql@hjp.at>)
Список pgsql-general

> On Oct 20, 2022, at 09:52, Vince McMahon <sippingonesandzeros@gmail.com> wrote:
> The number of rows are different.

This isn't unexpected.  EXPLAIN does not actually run the query and determine how many rows are returned; it calculates
anestimate based on the current system statistics, which vary constantly depending on activity in the database. 


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