Re: How to use outer join in update

From: Alban Hertroys <alban(at)magproductions(dot)nl>
To: Andrus <kobruleht2(at)hot(dot)ee>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: How to use outer join in update
Date: 2006-12-08 09:09:21
Message-ID: 45792BC1.3040305@magproductions.nl
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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

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Alban Hertroys
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magproductions b.v.

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