| From: | Sergey Konoplev <gray(dot)ru(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Thomas Kellerer <spam_eater(at)gmx(dot)net>, pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: DELETE using an outer join |
| Date: | 2012-07-20 08:21:43 |
| Message-ID: | CAL_0b1shAZWP76=jpA47MLJE4p3q9_FHnAAy9ki_gXk1kVYJuQ@mail.gmail.com |
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| Lists: | pgsql-sql |
On Thu, Jul 19, 2012 at 6:52 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Now I was wondering if a DELETE statement could be rewritten with the same "strategy":
>
> Not at the moment. There have been discussions of allowing the same
> table name to be respecified in USING, but there are complications.
However it works.
DELETE FROM some_table USING some_table AS s
WHERE
some_table.col1 = s.col1 AND
some_table.col2 = s.col2 AND
some_table.id < s.id;
--
Sergey Konoplev
a database and software architect
http://www.linkedin.com/in/grayhemp
Jabber: gray(dot)ru(at)gmail(dot)com Skype: gray-hemp Phone: +79160686204
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