Re: UPDATE FROM portability

>
> Updating some rows in tab1 with corresponding values from tab2, pgsql
style:
>
> UPDATE tab1
> SET value=T2.VALUE
> FROM tab2 T2
> WHERE T2.restr=1
> AND tab1.key=T2.key <<<<<<
>
> The same for MSSQL:
>
> UPDATE tab1
> SET value=T2.VALUE
> FROM tab1 T1
> JOIN tab2 T2 ON T1.key=T2.Key <<<<<<
> WHERE T2.restr=1
>
>
> I'm looking for a portable query style, without using a subquery in
the
> SET clause (which could make things quite slow)
> Any hints?
>
In postgres this should work as well
UPDATE tab1
SET value=tab2.VALUE
WHERE tab2.restr=1
AND tab1.key=tab2.key
I have to admit I don't know nothing about mssql,
so I have no idea if this is of any real help.

Regards, Christoph