update ta_share_activity
set activity_status = 1
where
NOW() < start_time and activity_status != 2
update ta_share_activity t
set activity_status = 0
where
t.activity_status != '2' and NOW() BETWEEN t.start_time and t.end_time
update ta_share_activity
set activity_status = 2
where
NOW() > end_time and activity_status != 2