在sql中根据成绩显示学生排名

1、准备

 1 create table newtable
 2 (
 3   name VARCHAR(100),
 4   yuwen INT(10),
 5   shuxue INT(10)
 6 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 7 
 8 
 9 INSERT INTO newtable (name, yuwen, shuxue) VALUES ('张三', 80, 67);
10 INSERT INTO newtable (name, yuwen, shuxue) VALUES ('李四', 98, 65);
11 INSERT INTO newtable (name, yuwen, shuxue) VALUES ('王五', 59, 98);
12 INSERT INTO newtable (name, yuwen, shuxue) VALUES ('赵六', 76, 87);
13 INSERT INTO newtable (name, yuwen, shuxue) VALUES ('田七', 69, 85);

2、实现

 1 select yuwentable.name studentname,yuwentable.yuwen yuwenscore ,cast(yuwentable.rank as SIGNED) yuwenrank,shuxuetable.shuxue shuxuescore,cast(shuxuetable.rank as SIGNED) shuxuescore 
 2 from 
 3   (  
 4     select (@yuwenrank:=@yuwenrank+1) as rank,name,yuwen 
 5     from newtable a,(select (@yuwenrank:=0)) b order by a.yuwen desc
 6   ) yuwentable ,
 7   (
 8     select (@shuxuerank:=@shuxuerank+1) as rank,name,shuxue 
 9     from newtable a,(select (@shuxuerank:=0)) b order by a.shuxue desc
10   ) shuxuetable
11   where yuwentable.name = shuxuetable.name order by yuwentable.name

说明:在DbVisualizer中,代码执行后,RANK这列含有小数点,所以这里通过case函数将其转换整数

3、结果

studentname yuwenscore yuwenrank shuxuescore shuxuescore 
----------- ---------- --------- ----------- ----------- 
张三          80         2         67          4           
李四          98         1         65          5           
王五          59         5         98          1           
田七          69         4         85          3           
赵六          76         3         87          2   

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原文地址:https://www.cnblogs.com/codeOfLife/p/7403765.html