David Pradier wrote:
> Actually, the column "id_compte" is the primary key of the table "compte".
> The column "id_compte" doesn't exist in the table "operation".
>
> But i still don't understand why there is no error message, could you
> explain a little more ?
I think it's intended for use in the WHERE clause:
SELECT a.* FROM a WHERE a1 IN (SELECT b3 FROM b WHERE b2=a2)
--
Richard Huxton
Archonet Ltd