In article <[EMAIL PROTECTED]>,
Alban Hertroys <[EMAIL PROTECTED]> writes:
> Andrus wrote:
>> In my current DBMS I can use
>>
>> create table t1 ( f1 int, f2 int );
>> create table t2 ( f3 int, f4 int );
>> update t1 set f1=t2.f3 from t1 left join t2 on t1.f2=t2.f4
> That looks like a self-join on t1 without using an alias for the second
> instance of t1.
> I think you meant:
> update t1 set f1=t2.f3 from t2 where f2 = t2.f4
Or this one:
UPDATE t1
SET f1 = t2.f3
FROM t1 x
LEFT JOIN t2 ON x.f2 = t2.f4
WHERE x.f2 = t1.f2
---------------------------(end of broadcast)---------------------------
TIP 3: Have you checked our extensive FAQ?
http://www.postgresql.org/docs/faq
