Josh Berkus wrote:
> All,
>
> >> DELETE FROM target t USING t LEFT JOIN other_table ot ON ...
> >>
> >> but we have always considered that the target is *not* to be identified
> >> with any member of the FROM/USING clause, so it would be a serious
> >> compatibility break to change that now.
>
> What I don't get is why this is such a usability issue. Subqueries in
> DELETE FROM work perfectly well, and provide more flexibility than most
> users know what to do with.
OK, so you are saying that every OUTER join can be efficiently
reprsented as a subquery? If that is true we don't need to add ANSI
join support to USING.
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
