Horton

Re: (PATCH) Adding CORRESPONDING to Set Operations

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Kerem Kat <keremkat@gmail.com>
Cc: Thom Brown <thom@linux.com>, Erik Rijkers <er@xs4all.nl>, Robert Haas <robertmhaas@gmail.com>, pgsql-hackers@postgresql.org
Date: 2011-11-14T13:32:47Z
Lists: 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