I have the following table: Objeto Valor
ob1 10 ob1 20 ob2 50 ob2 10 ob3 50 With the following command: "select distinct Objeto, sum(valor) from tb group by Objeto;" I have to return: Objeto Valor ob1 30 ob2 60 ob3 50 What you need to do is add ob2 and ob3 in one field, Leading me the following table: Objeto Valor ob1 30 ob2e3 110 It can do this only with Select? ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org