Re: request for sql3 compliance for the update command
От | Bruce Momjian |
---|---|
Тема | Re: request for sql3 compliance for the update command |
Дата | |
Msg-id | 200505101254.j4ACs7V29855@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: request for sql3 compliance for the update command (Greg Stark <gsstark@mit.edu>) |
Список | pgsql-hackers |
Greg Stark wrote: > > Tom Lane <tgl@sss.pgh.pa.us> writes: > > > UPDATE totals SET > > xmax = ss.xmax, xmin = ss.xmin, ... > > FROM > > (SELECT groupid, max(x) AS xmax, ... FROM details GROUP BY groupid) ss > > WHERE groupid = ss.groupid; > > > ... > > > > Of course this syntax isn't standard either ... but we already have it. > > > Did this patch ever make it in? It's not documented in the 8.0 documentation > for UPDATE at: > > http://www.postgresql.org/docs/8.0/interactive/dml-update.html It is documented only in the UPDATE manual page because it is fairly exotic: http://www.postgresql.org/docs/8.0/interactive/sql-update.html -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania19073
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