--- verwaiste Zahlungsbedingungen vorher entfernen
-update vendor set payment_id = NULL where payment_id not in (select id from payment_terms);
-
+-- verwaiste Einträge vorher entfernen
+UPDATE vendor SET payment_id = NULL WHERE payment_id NOT IN (SELECT id FROM payment_terms);
+UPDATE vendor SET language_id = NULL WHERE language_id NOT IN (SELECT id FROM language);
+UPDATE vendor SET business_id = NULL WHERE business_id NOT IN (SELECT id FROM business);