Re: UPDATE ... RETURNING atomicity - Mailing list pgsql-general

From Lew
Subject Re: UPDATE ... RETURNING atomicity
Date
Msg-id htbnr4$r2q$1@news.albasani.net
Whole thread Raw
In response to UPDATE ... RETURNING atomicity  (rihad <rihad@mail.ru>)
List pgsql-general
On 05/23/2010 02:15 AM, rihad wrote:
> In this query:
> UPDATE foo
> SET allocated_to=?
> WHERE id=(SELECT MIN(id) FROM foo WHERE allocated_to IS NULL)
> AND allocated_to IS NULL
> RETURNING id

Isn't the "AND allocated_to IS NULL" clause redundant?

--
Lew

pgsql-general by date:

Previous
From: Bogdan Gusiev
Date:
Subject: EXECUTE and FOUND
Next
From: Gary Fu
Date:
Subject: No lidbl.so in libpq.so (postgresql 8.4.4)