Re: OT - select + must have from - sql standard syntax?
От | Jim C. Nasby |
---|---|
Тема | Re: OT - select + must have from - sql standard syntax? |
Дата | |
Msg-id | 20060613210246.GA34196@pervasive.com обсуждение исходный текст |
Ответ на | OT - select + must have from - sql standard syntax? (Antoine <melser.anton@gmail.com>) |
Ответы |
Re: OT - select + must have from - sql standard syntax?
|
Список | pgsql-performance |
On Tue, Jun 13, 2006 at 02:43:45PM +0200, Antoine wrote: > Hi, > I don't have a copy of the standard on hand and a collegue is claiming > that there must be a from clause in a select query (he is an oracle > guy). This doesn't seem to be the case for postgres... does anyone > know? Dunno, but I know that other databases (at least DB2) don't require FROM either. In Oracle, if you want to do something like SELECT now(); you actually have to do SELECT now() FROM dual; where dual is a special, hard-coded table in Oracle that has only one row. Personally, I find their approach to be pretty stupid. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
В списке pgsql-performance по дате отправления: