列不包含在聚合函數或組合條款中

我試圖選擇具有使用sum的查詢的行。我不斷收到錯誤column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.我將指定的列添加到group by子句中，並且它僅轉到查詢中的下一列。我真的必須將select子句中的每一列添加到group by子句嗎？列不包含在聚合函數或組合條款中

這是我的查詢：

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

來源

2016-03-04 ShoeLace1291

是的，GROUP BY子句中的所有列必須位於SELECT中，但聚合函數中使用的列除外。 –

那麼你是否希望從'assignments'或者它的每一行獲得聚合值呢？因爲你實際上在你的選擇列表中有'a.assignmentID'，這意味着你需要單獨的每一行。 –

嘗試這樣的。

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（如果您需要在選擇的所有列。你應該把它包含在組）

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

來源

2016-03-04 07:22:00 StackUser

不一定，如果你使用SQL服務器2012或以上版本（我相信），你可以使用OVER條款，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

來源

2016-03-04 07:32:48 sams

列不包含在聚合函數或組合條款中

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