mysql-函数if多值多结果判断

if语句

案例:同样统计男女生人数,语句如下:

SELECT school,COUNT(school) 人数,SUM(IF(sex='',1,0)) 男生数,SUM(IF(sex='',1,0)) 女生数, 
  SUM(IF(pass=1,1,0)) pass1,SUM(IF(pass=0,1,0)) pass0,
  SUM(IF(state=1,1,0)) state1,SUM(IF(state=0,1,0)) state0
FROM sch 
  GROUP BY sex,school

 

posted @ 2016-03-30 10:22  243573295  阅读(4464)  评论(0编辑  收藏  举报