mysql分组排序并取得排序号码

mysql分组排序并获得排序号码

数据表 grades:

需要得到查询结果:

sql语句:

?select *, (select count(1) + 1 ?from grades B ?where A.gender = B.gender and A.grade < B.grade) as rank from grades A order by gender , grade desc;
?
?参见:

http://topic.csdn.net/u/20110411/10/a303ad9d-d061-4781-952f-7de9897f0bed.html

mysql分组排序并取得排序号码

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