这条查找语句怎么写?
查找SceneId中UsersSex='男'的用户总数。
说明一下UsersName是UsersInfo主键,还是ApplyInfo外键。SceneId是ApplyInfo外键
[解决办法]
不知是不是这个意思....
select applyinfo.sceneid,count(distinct usersname) as usersfrom applyinfo ,usersinfowhere applyinfo.usersname = usersinfo.usersnameand usersinfo.userssex = '男'group by applyinfo.sceneid