Hi Sergey,

Thank's, Edgar tell me that a few moments ago.

But the query doesn't do what i expected, this query group in one record all the in and out records, what i need is the group customer then by Ref(Product) all in and out records, any chance. If you can see my first question.

Because any customer could have one or more ref(Product) in my stock.

>>>>you query doesn't take in account movimento values of 50 and 51. Is it intentional?

No only test purpose...:)

Thank's for your time..

João