Re: top-level DML under CTEs
Robert Haas <robertmhaas@gmail.com>
From: Robert Haas <robertmhaas@gmail.com>
To: Hitoshi Harada <umi.tanuki@gmail.com>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2010-09-13T13:20:19Z
Lists: pgsql-hackers
On Mon, Sep 13, 2010 at 9:15 AM, Hitoshi Harada <umi.tanuki@gmail.com> wrote: > The patch attached is based on the one rejected at the last CF for 9.0 > last year. > > http://archives.postgresql.org/message-id/16303.1266023203@sss.pgh.pa.us > > This patch implements the feature that allows top-level DMLs under CTE > WITH clause. For example: > > WITH t AS (SELECT * FROM x) > UPDATE y SET val = t.val FROM t > WHERE y.key = t.key; > > This feature is part of writeable CTEs proposed by David Fetter originally. Thanks for pursuing this. I think this will be a useful feature if we can get it committed, and plus David Fetter will be very, very happy. :-) -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise Postgres Company