salix/db/versions/11346-yellowPhormium/00-address.sql

ALTER TABLE vn.address
	ADD geoFk int(11) DEFAULT NULL NULL AFTER isLogifloraAllowed,
	ADD CONSTRAINT address_zoneGeo_FK FOREIGN KEY (geoFk)
		REFERENCES vn.zoneGeo(id) ON DELETE RESTRICT ON UPDATE CASCADE;

CREATE OR REPLACE TEMPORARY TABLE tAddressGeo
	(PRIMARY KEY (id))
	ENGINE = MEMORY
	SELECT a.id, p.geoFk
		FROM address a
			JOIN town t ON t.provinceFk = a.provinceFk
			JOIN postCode p ON p.townFk = t.id
		GROUP BY a.id
		ORDER BY (a.city SOUNDS LIKE t.`name`) DESC,
			(p.code = a.postalCode) DESC;

UPDATE address a
		JOIN tAddressGeo tag ON tag.id = a.id
	SET a.geoFk = tag.geoFk;

DROP TEMPORARY TABLE tAddressGeo;