Tom Lane wrote:
> Yup, that's what I suspected. Hashing 2-byte and 4-byte integers
> doesn't deliver the same result --- at least not all the time, there
> are special cases such as zero. So this explains all your observed
> misbehaviors.
>
> You can work around it for now by remaking the tables with consistent
> data types.
OK! Thanks...
-- Mario Filipe mjnf@uevora.pt http://neptuno.sc.uevora.pt/~mjnf