From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
cc: Kevin Grittner <kgrittn@gmail.com>, Robert Haas <robertmhaas@gmail.com>,
        "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>
Subject: Re: Implement targetlist SRFs using ROWS FROM() (was Changed SRF in
 targetlist handling)
In-reply-to: <20160902162553.xgcnvnggxhnztaun@alap3.anarazel.de>
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 <20160902141110.6xciuntt5h4i6eni@alap3.anarazel.de>
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 <10163.1472826300@sss.pgh.pa.us>
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 <20160902162553.xgcnvnggxhnztaun@alap3.anarazel.de>
Comments: In-reply-to Andres Freund <andres@anarazel.de>
	message dated "Fri, 02 Sep 2016 09:25:53 -0700"
Date: Fri, 02 Sep 2016 12:32:51 -0400
Message-ID: <18142.1472833971@sss.pgh.pa.us>
Precedence: bulk
Sender: pgsql-hackers-owner@postgresql.org

Andres Freund <andres@anarazel.de> writes:
> ...  What we could do is to add efficient
> ROWS FROM (..) WITH ORDINALITY ORDER bY ordinality;
> support.

Hm?

regression=# explain select * from rows from (generate_series(1,10)) with ordinality order by ordinality;
                               QUERY PLAN                                
-------------------------------------------------------------------------
 Function Scan on generate_series  (cost=0.00..10.00 rows=1000 width=12)
(1 row)

			regards, tom lane


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