Re: (PATCH) Adding CORRESPONDING to Set Operations

Kerem Kat <keremkat@gmail.com>

From: Kerem Kat <keremkat@gmail.com>

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

Cc: Thom Brown <thom@linux.com>, Erik Rijkers <er@xs4all.nl>, Robert Haas <robertmhaas@gmail.com>, pgsql-hackers@postgresql.org

Date: 2011-11-14T14:09:31Z

Lists: pgsql-hackers

On Mon, Nov 14, 2011 at 15:32, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> 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
>

I am well aware of that thank you.

Regards,

Kerem KAT