Re: Why can't you define a table alias on an update?
От | Jim C. Nasby |
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Тема | Re: Why can't you define a table alias on an update? |
Дата | |
Msg-id | 20030616060613.GC40542@flake.decibel.org обсуждение исходный текст |
Ответ на | Re: Why can't you define a table alias on an update? (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Why can't you define a table alias on an update?
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Список | pgsql-general |
On Sun, Jun 15, 2003 at 06:36:57PM -0400, Tom Lane wrote: > nolan@celery.tssi.com writes: > > This is the query I posted a performance question on, but I have a > > SQL standard question about it too: > > Why can't you define an alias on the primary table in an update query? > > Because there's no such syntax in the SQL standard. > > It seems like a reasonable extension, but looking at the grammar just > now, I think that we'd have to turn SET from an unreserved keyword to a > reserved word to make this work. Not sure how many peoples' databases > that would break ... but we'd probably get a few complaints ... Would it be reasonable to have a setting that enabled/disabled this? Because I would **LOVE** to have aliases for UPDATE! -- Jim C. Nasby (aka Decibel!) jim@nasby.net Member: Triangle Fraternity, Sports Car Club of America Give your computer some brain candy! www.distributed.net Team #1828 Windows: "Where do you want to go today?" Linux: "Where do you want to go tomorrow?" FreeBSD: "Are you guys coming, or what?"
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