table : user 字段:uid begin end select uid,sum(time) as all_time from (select uid, (case ...
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table : user 字段:uid begin end select uid,sum(time) as all_time from (select uid, (case ...
1:如果不考虑当天刚开始是关播或者连续的关播,当天最后是开播或者连续的开播 select id,sum(length) as all_time from (select id...