# christian@pil.dk / 2005-08-12 10:17:50 +0200:
> I just experienced some bad SQL causing quite unexpected results.
>
> I used a statement like this:
> SELECT t1.a, t1.b, t2.d FROM test1 t1, test2 t2 WHERE t1.a = test2.a;
>
> Where I should have used this instead:
> SELECT t1.a, t1.b, t2.d FROM test1 t1, test2 t2 WHERE t1.a = t2.a;
>
> When I looked into it and tried it from psql, I got this notice:
> NOTICE: adding missing FROM-clause entry for table "test2"
>
> Now, I understand that postgresql is adding "test2" to the list of
> tables, I am selecting from as it is missing. However the result
> is quite different from what I expected.
>
> Is there a way to change this behaviour to generate an error instead
> of just a notice?
set add_missing_from = false in postgresql.conf
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