Re: DELETE syntax on JOINS
От
Bruce Momjian
Тема
Re: DELETE syntax on JOINS
Дата
Msg-id
200908251302.n7PD22722022@momjian.us
Ответ на
Re: DELETE syntax on JOINS (Josh Berkus)
Список
Дерево обсуждения
DELETE syntax on JOINS Jean-Michel Pouré <jm@poure.com>
Re: DELETE syntax on JOINS Bruce Momjian <bruce@momjian.us>
Re: DELETE syntax on JOINS Alvaro Herrera <alvherre@commandprompt.com>
Re: DELETE syntax on JOINS Bruce Momjian <bruce@momjian.us>
Re: DELETE syntax on JOINS Bill Moran <wmoran@potentialtech.com>
Re: DELETE syntax on JOINS Jean-Michel Pouré <jm@poure.com>
Re: DELETE syntax on JOINS Alvaro Herrera <alvherre@commandprompt.com>
Re: DELETE syntax on JOINS Tom Lane <tgl@sss.pgh.pa.us>
Re: DELETE syntax on JOINS Bruce Momjian <bruce@momjian.us>
Re: DELETE syntax on JOINS Josh Berkus <josh@agliodbs.com>
Re: DELETE syntax on JOINS Bruce Momjian <bruce@momjian.us>
Re: DELETE syntax on JOINS Robert Haas <robertmhaas@gmail.com>
Re: DELETE syntax on JOINS Tom Lane <tgl@sss.pgh.pa.us>
Re: DELETE syntax on JOINS Greg Stark <gsstark@mit.edu>
Re: DELETE syntax on JOINS Tom Lane <tgl@sss.pgh.pa.us>
Re: DELETE syntax on JOINS Andrew Dunstan <andrew@dunslane.net>
Re: DELETE syntax on JOINS Tom Lane <tgl@sss.pgh.pa.us>
Re: DELETE syntax on JOINS Robert Haas <robertmhaas@gmail.com>
Re: DELETE syntax on JOINS Tom Lane <tgl@sss.pgh.pa.us>
Re: DELETE syntax on JOINS Sam Mason <sam@samason.me.uk>
Re: DELETE syntax on JOINS Bruce Momjian <bruce@momjian.us>
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 http://momjian.us EnterpriseDB http://enterprisedb.com + If your life is a hard drive, Christ can be your backup. +
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