[how to eliminate circular references]

[cosinho89]

hello,

I need to join this 3 tables. 

If I join only "ID Gara" and "Ragione Sociale" everything works but when I add "Codice Categoria Merceologica" the system give a circular references error. 

Someone can help me to solve it? I need to join id gara - ragione sociale - codice cat. merceologica for my activities.

Thanks,

Marco

[Tanalex]

 I would rename "Codice Categoria Merceologica". Either explicitly or through the QUALIFY statement.