Mysql排序获取排名的实例代码
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2022-07-02 19:44:02
代码如下所示:
select @i:=@i+1 rownum,
if(@total=t.s_score,@rank,@rank:=@i) rank,@total...
代码如下所示:
select @i:=@i+1 rownum, if(@total=t.s_score,@rank,@rank:=@i) rank,@total:=t.s_score, t.* from( select t1.* ,t2.s_score from student t1 left join score t2 on t1.s_id=t2.s_id and t2.c_id="01" order by t2.s_score desc )t,(select @i:=0,@rank:=0,@total:=null) s ; select @i:=@i+1 rownum, if(@total=t.s_score,@rank,@rank:=@rank+1) rank,@total:=t.s_score, t.* from( select t1.* ,t2.s_score from student t1 left join score t2 on t1.s_id=t2.s_id and t2.c_id="01" order by t2.s_score desc )t,(select @i:=0,@rank:=0,@total:=null) s ;
mysql 获取成绩排序后的名次
其实就是输出mysql的排序后的行号
rt:获取单个用户的成绩在所有用户成绩中的排名
可以分两步:
1、查出所有用户和他们的成绩排名
select id,maxscore,(@rownum:=@rownum+1) as rowno from t_user, (select (@rownum :=0) ) b order by t_user.maxscore desc
2、查出某个用户在所有用户成绩中的排名
select u.rowno from ( select id,(@rownum:=@rownum+1) as rowno from t_user, (select (@rownum :=0) ) b order by t_user.maxscore desc ) u where u.id="2015091810371700001";
总结
以上所述是小编给大家介绍的mysql排序获取排名,希望对大家有所帮助
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