小编PiD*_*iDO的帖子

我想将平均值的小数限制为2 ..

SELECT grade.GStudNo, AVG(grade.Grade) AS Average, students.LName, students.FName, students.MName, students.Course
FROM students INNER JOIN grade ON students.StudNo = grade.GStudNo
WHERE GSem = '$sem' AND GYear = '$year'
GROUP BY grade.GStudNo
ORDER BY Average ASC LIMIT 3