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MySQL 给查询结果带上序列号 No

哈哈我是你爹呀 2022-06-10 阅读 64
select a.* from (SELECT (@i:=@i+1) i, fixed_duration FROM issue isu, (SELECT @i:=0) as i
where isu.is_valid = 'y'
ORDER BY fixed_duration desc) a
WHERE a.i > (select count(*)*0.2 from issue issu where issu.is_valid ='y');



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