Re: Compiere ERP and SQL quirks - Mailing list pgsql-hackers

From Andreas Pflug
Subject Re: Compiere ERP and SQL quirks
Date
Msg-id 41DED384.8060704@pse-consulting.de
Whole thread Raw
In response to Re: Compiere ERP and SQL quirks  ("Marek Mosiewicz" <marekmosiewicz@poczta.onet.pl>)
List 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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