SQL中怎么求和
发布网友
发布时间:2023-02-09 10:22
我来回答
共1个回答
热心网友
时间:2024-12-05 06:18
1)select avg(Score) from TestScore;
2)select InYear,TestName,times=count(1) group by InYear,TestName
3)select StudentName,ClassName,TestName,Score
from TestScore a,TestInfo b
where b.TestID=a.TestID
and a.Score>60