ALTER TABLE core_ip_access ADD COLUMN created_dt DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00';
ALTER TABLE core_ip_access ADD COLUMN status INT(2) NOT NULL DEFAULT 0; -- (-1 blocked, 0 new, 1 approved)
ALTER TABLE core_ip_access ADD COLUMN authorized_by INT(11) NOT NULL DEFAULT 0;
-ALTER TABLE core_ip_access ADD COLUMN authorized_key VARCHAR(256) NOT NULL DEFAULT 0;
+ALTER TABLE core_ip_access ADD COLUMN authorized_key VARCHAR(256) NOT NULL DEFAULT '';