1SELECT COUNT(tc.constraint_name) 2 FROM information_schema.table_constraints tc 3 INNER JOIN information_schema.key_column_usage kcu 4 ON tc.constraint_catalog = kcu.constraint_catalog 5 AND tc.constraint_schema = kcu.constraint_schema 6 AND tc.constraint_name = kcu.constraint_name 7 INNER JOIN information_schema.referential_constraints rc 8 ON tc.constraint_catalog = rc.constraint_catalog 9 AND tc.constraint_schema = rc.constraint_schema 10 AND tc.constraint_name = rc.constraint_name 11 AND tc.constraint_type = 'FOREIGN KEY' 12 INNER JOIN information_schema.constraint_column_usage ccu 13 ON rc.unique_constraint_catalog = ccu.constraint_catalog 14 AND rc.unique_constraint_schema = ccu.constraint_schema 15 AND rc.unique_constraint_name = ccu.constraint_name 16 WHERE tc.constraint_name = '%_FK_%' 17 AND rc.update_rule = 'RESTRICT' 18 AND rc.delete_rule = 'CASCADE' 19