SQL Abfrage

[B.Hauser]

Dann versuch's damit:

with x as (select x1 as xx1, x2 as xx2, count(x3) as AnzX3   
             from mytable                                    
             group by x1, x2                                 
             having count(X3) > 1)                           
select x1, x2, x3                                            
  from mytable join x on x1=xx1 and x2=xx2 

Birgitta