SELECT c.* 
		               FROM importazione.v_cataloghi2opere as c
					   LEFT JOIN importazione.v_netbull_cat_operaestesa as e ON c.fk_opera = e.fk_opera
					WHERE c.fk_opera ilike 'O_U198580' and c.fk_lingua = 'it' 
					AND c.iscatalogoprincipale = '1' 
					and e.visibile = '1'