ALTER TABLE delete_collection DROP last_update;
ALTER TABLE district_geometry DROP last_update;
ALTER TABLE house_geometry DROP last_update;
ALTER TABLE nhso_smartcard DROP last_update;
ALTER TABLE province_geometry DROP last_update;
ALTER TABLE subdistrict_geometry DROP last_update;
ALTER TABLE village_geometry DROP last_update;
ALTER TABLE villagebusiness_geometry DROP last_update;
ALTER TABLE villageschool_geometry DROP last_update;
ALTER TABLE villagetemple_geometry DROP last_update;
ALTER TABLE villagewater_geometry DROP last_update;