Him,
Tom Lane napisał(a):
> Marek Wróbel <mwrobel@icentrum.pl> 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...