| From: | Andreas Pflug <pgadmin(at)pse-consulting(dot)de> |
|---|---|
| To: | Marek Mosiewicz <marekmosiewicz(at)poczta(dot)onet(dot)pl> |
| Cc: | Merlin Moncure <merlin(dot)moncure(at)rcsonline(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Compiere ERP and SQL quirks |
| Date: | 2005-01-07 18:23:00 |
| Message-ID: | 41DED384.8060704@pse-consulting.de |
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| Lists: | pgsql-hackers |
Marek Mosiewicz wrote:
> Upps sorry now found it on TODO list.
>
> I was not aware that it is SQL92 standard.
>
> Is it difficult to implement ?
> Simplest approach would be
> to rewrite it to UPDATE t1 set col1 = (select cola ...), col2 = (select
> colb....) ....
> but it would result in not optimal plan.
Doesn't something like
UPDATE t1 SET col1=cola, col2=colb
FROM t1 JOIN anothertable ot ON t1.id=ot.id
WHERE ...
Work the way you'd like it? I'd expect this syntax to be as widely
portable and performant.
Regards,
Andreas
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