方法1:嵌套:
select * from
((select sid,avg(score) as avg from sc group by sid)as kk)
where avg > 60;
注意事项:where后不能加函数,所以要在前一句把函数名转化成别名
方法2:不用嵌套:
select sid,avg(score) from sc group by sid
having avg(score) > 60;
方法1:嵌套:
select * from
((select sid,avg(score) as avg from sc group by sid)as kk)
where avg > 60;
注意事项:where后不能加函数,所以要在前一句把函数名转化成别名
方法2:不用嵌套:
select sid,avg(score) from sc group by sid
having avg(score) > 60;