Re: Simple SQL-syntax

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От Josh Berkus
Тема Re: Simple SQL-syntax
Дата
Msg-id web-105344@davinci.ethosmedia.com
обсуждение исходный текст
Ответ на RE: Simple SQL-syntax  ("Robby Slaughter" <webmaster@robbyslaughter.com>)
Список pgsql-sql
Robby,

> There's no FROM clause in an update statement. And second, you
> need to be careful to make sure all your tokens make sense. You
> had an extra "B" in the middle of your statement. Based on this:

Actually, Postgres *does* support UPDATE ... FROM.  I use it quite a
bit.  The syntax can be fussy, however.

The following is perfectly valid in Postgres, although not 100% ANSI-92
kosher:
UPDATE A SET 1 = B.2
FROM B
WHERE A.2 = B.2

Fredrik's problem may be simply the table reference after SET; that's
why I'd like to see his exact parse error message.

-Josh


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