mysql case when then 的使用

case

when t2.status = 4 and t2.expire_time>UNIX_TIMESTAMP() and t2.expire_time<UNIX_TIMESTAMP(DATE_ADD(NOW(),INTERVAL 60 day))

then 4

when `status` = 2 then 3 when `status` = 3 then 2 when t2.status = 4 and t2.expire_time>UNIX_TIMESTAMP(DATE_ADD(NOW(),INTERVAL 60 day)) and t2.expire_time<UNIX_TIMESTAMP(DATE_ADD(NOW(),INTERVAL 1 year))

then 1 else 0

end sort