Him,

Tom Lane napisał(a):
> =?ISO-8859-2?Q?Marek_Wr=F3bel?= <[EMAIL PROTECTED]> writes:
>> create table a (a1 integer);
>> create table b (b1 integer);
>> insert into a (a1) values (1);
>> insert into a (a1) values (2);
>> select a1 from b;
>> ERROR:  column "a1" does not exist at character 8
>> but :
>> select a1 from a where a1 not in (select a1 from b);
> 
> This is not a bug, it's an outer reference.  Read any SQL book ...

of course... so sorry... I was such startled off result off this query,
that I can't see that...

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