>>>Muchas gracias por tu repuesta.
>>>Saludos
>>
>>De nada <g> (Hopefully that's correct).
>
>It is correct.
>
>
>(1) You can use a having clause - it filters the final result
>
>(2) you could also repeat the expr in the where clause

Right, can you show a sample of HAVING without GROUP BY?

BTW, interesting that you're also reading Spanish forum...