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[PERFORM] Re: Query planner gaining the ability to replanning after start ofquery execution. - Mailing list pgsql-performance

From legrand legrand
Subject [PERFORM] Re: Query planner gaining the ability to replanning after start ofquery execution.
Date
Msg-id 1510694776440-0.post@n3.nabble.com
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In response to Re: [PERFORM] Query planner gaining the ability to replanning afterstart of query execution.  (Oliver Mattos <omattos@gmail.com>)
List pgsql-performance
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As a first step, before relaunching the query with a new plan I would be
happy to be able to get information about sql queries having wrong
estimates.

Maybe thoses SQL queries could be collected using something similar to
"auto_explain" module (tracing finished or cancelled queries).

If the "corrected plan" taking into account real cardinalities was proposed
(with some advices on how to get it) it would be a great tuning adviser ;o)





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