UNIX_TIMESTAMP(u.`cashed_on`) AS `cashed_on`,
UNIX_TIMESTAMP(d.`coupon_created`) AS `coupon_created`,
UNIX_TIMESTAMP(d.`coupon_expired`) AS `coupon_expired`,
UNIX_TIMESTAMP(u.`cashed_on`) AS `cashed_on`,
UNIX_TIMESTAMP(d.`coupon_created`) AS `coupon_created`,
UNIX_TIMESTAMP(d.`coupon_expired`) AS `coupon_expired`,