SELECT cmi_cross_ref_id FROM cmi_cross_references EXCEPT SELECT cmi_cross_ref_id FROM parking_fines
Which cmi cross reference id is not related to any parking taxes?
SELECT cmi_cross_ref_id FROM cmi_cross_references EXCEPT SELECT cmi_cross_ref_id FROM parking_fines
select cmi_cross_ref_id from cmi_cross_references except select cmi_cross_ref_id from parking_fines
Which cmi cross reference id is not related to any parking taxes ?