做一个平均数，合计数的sql查询

select score as '成绩' ,name as '姓名' from students
UNION ALL
select AVG(score) from students;

在最后一行显示平均数；

select score as '成绩' ,name as '姓名' from students
UNION ALL
select SUM(score) from students;

在最后一个显示合计数；

标签：studentsUNION,name,students,平均数,查询,score,sql,ALLselect,select
来源： https://www.cnblogs.com/Thenext/p/11033050.html