Re: (PATCH) Adding CORRESPONDING to Set Operations - Mailing list pgsql-hackers

From Tom Lane
Subject Re: (PATCH) Adding CORRESPONDING to Set Operations
Date
Msg-id 24578.1321277567@sss.pgh.pa.us
Whole thread Raw
In response to Re: (PATCH) Adding CORRESPONDING to Set Operations  (Kerem Kat <keremkat@gmail.com>)
Responses Re: (PATCH) Adding CORRESPONDING to Set Operations
List pgsql-hackers
Kerem Kat <keremkat@gmail.com> writes:
> Corresponding is currently implemented in the parse/analyze phase. If
> it were to be implemented in the planning phase, explain output would
> likely be as you expect it to be.

It's already been pointed out to you that doing this at parse time is
unacceptable, because of the implications for reverse-listing of rules
(views).
        regards, tom lane


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