David Pradier wrote:
Ok, understood.
One can access the columns of the main query from the subquery,
therefore in my own query the column "id_compte" is found,
therefore there is no error message.

Doesn't this count as a bug ?

Tricky, you could have something like: SELECT a.* FROM a WHERE (a1,a2) IN (SELECT a1,b3 FROM b ...)

If that's legal, then so is your query.

On Wed, Mar 16, 2005 at 02:24:48PM +0000, Richard Huxton wrote:

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

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