列不包含在聚合函数或组合条款中

我试图选择具有使用sum的查询的行。我不断收到错误column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.我将指定的列添加到group by子句中，并且它仅转到查询中的下一列。我真的必须将select子句中的每一列添加到group by子句吗？列不包含在聚合函数或组合条款中

这是我的查询：

SELECT 
    s.studentId, s.firstName, s.lastName, 
    c.courseId, c.courseName, c.semesterId AS courseSemesterId, 
    se.semesterId, se.season, se.year, 
    e.enrollmentId, e.studentId AS enrolledStudentId, e.courseId AS enrolledCourseId, e.semesterId AS enrolledSemesterId, 
    a.assignmentId, (sum(a.pointsEarned)/sum(a.pointsPossible)) AS percentage 
FROM Students AS s 
INNER JOIN Enrollment AS e ON s.studentId = e.studentId 
LEFT JOIN Courses AS c ON e.courseId = c.courseId 
LEFT JOIN Semesters AS se ON c.semesterId = se.semesterId 
LEFT JOIN Assignments AS a ON e.enrollmentId = a.enrollmentId 
GROUP BY s.studentId, s.firstName, s.lastName 
ORDER BY e.courseId

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2016-03-04 ShoeLace1291

是的，GROUP BY子句中的所有列必须位于SELECT中，但聚合函数中使用的列除外。 –

那么你是否希望从'assignments'或者它的每一行获得聚合值呢？因为你实际上在你的选择列表中有'a.assignmentID'，这意味着你需要单独的每一行。 –

尝试这样的。

方法-1

SELECT s.studentId 
    ,s.firstName 
    ,s.lastName 
    ,(sum(a.pointsEarned)/sum(a.pointsPossible)) AS percentage 
FROM Students AS s 
INNER JOIN Enrollment AS e ON s.studentId = e.studentId 
LEFT JOIN Courses AS c ON e.courseId = c.courseId 
LEFT JOIN Semesters AS se ON c.semesterId = se.semesterId 
LEFT JOIN Assignments AS a ON e.enrollmentId = a.enrollmentId 
GROUP BY s.studentId 
    ,s.firstName 
    ,s.lastName 
ORDER BY e.courseId

方法-2（如果您需要在选择的所有列。你应该把它包含在组）

SELECT s.studentId 
    ,s.firstName 
    ,s.lastName 
    ,c.courseId 
    ,c.courseName 
    ,c.semesterId AS courseSemesterId 
    ,se.semesterId 
    ,se.season 
    ,se.year 
    ,e.enrollmentId 
    ,e.studentId AS enrolledStudentId 
    ,e.courseId AS enrolledCourseId 
    ,e.semesterId AS enrolledSemesterId 
    ,a.assignmentId 
    ,(sum(a.pointsEarned)/sum(a.pointsPossible)) AS percentage 
FROM Students AS s 
INNER JOIN Enrollment AS e ON s.studentId = e.studentId 
LEFT JOIN Courses AS c ON e.courseId = c.courseId 
LEFT JOIN Semesters AS se ON c.semesterId = se.semesterId 
LEFT JOIN Assignments AS a ON e.enrollmentId = a.enrollmentId 
GROUP BY s.studentId 
    ,s.firstName 
    ,s.lastName 
    ,c.courseId 
    ,c.courseName 
    ,c.semesterId 
    ,se.semesterId 
    ,se.season 
    ,se.year 
    ,e.enrollmentId 
    ,e.studentId 
    ,e.courseId 
    ,e.semesterId 
    ,a.assignmentId 
ORDER BY e.courseId

来源

2016-03-04 07:22:00 StackUser

不一定，如果你使用SQL服务器2012或以上版本（我相信），你可以使用OVER条款，比如：

(sum(a.pointsEarned) OVER (PARTITION BY s.studentId)/
sum(a.pointsPossible) OVER (PARTITION BY s.studentId))

李nk to msdn文章：OVER Clause

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2016-03-04 07:32:48 sams

列不包含在聚合函数或组合条款中

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