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Re: [BUGS] BUG #14642: Excessive sorting node appears in the plan - Mailing list pgsql-bugs

From Tom Lane
Subject Re: [BUGS] BUG #14642: Excessive sorting node appears in the plan
Date
Msg-id 6817.1493907177@sss.pgh.pa.us
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In response to [BUGS] BUG #14642: Excessive sorting node appears in the plan  (bashtanov@imap.cc)
Responses Re: [BUGS] BUG #14642: Excessive sorting node appears in the plan  (David Rowley <david.rowley@2ndquadrant.com>)
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bashtanov@imap.cc writes:
> Do blackbox-style subplans, such as subqueries with grouping, share only the
> resulting stream order info with the enclosing query, not the equivalence
> classes?

Yes, see convert_subquery_pathkeys().
        regards, tom lane


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