Question

SELECT Staff_Teaching.TeachingID FROM   Staff_Teaching INNER JOIN
          Staff ON Staff_Teaching.StaffID = Staff.StaffID WHERE        (Staff.StaffID = @StaffID) AND (Staff_Teaching.SemesterID = @SemesterID))

我有这个查询返回工作人员TeachingID，这是工作人员教授课程的ID。

我的问题是：

如何存储这些值，因为它返回的值超过1个，我可以在sql server或c＃中使用数组吗？
然后我想获取这些值并将其传递给其他查询，如下所示：

（SELECT Exam.Date FROM Exam WHERE（ExamID = @GetExamID）

`@GetExamID` is where I want to pass these values to be checked

我可以使用foreach或数组吗？我正在使用asp.net（C＃）

这就是我想要做的事情

BEGIN TRANSACTION
SET @GetTeachingID =(SELECT        Staff_Teaching.TeachingID
FROM          Staff_Teaching INNER JOIN
              Staff ON Staff_Teaching.StaffID = Staff.StaffID
WHERE        (Staff.StaffID = @StaffID) AND (Staff_Teaching.SemesterID = @SemesterID))
COMMIT 

BEGIN TRANSACTION
SELECT  Course_Department.CourseID
FROM            Course_Department INNER JOIN
                         Exam ON Course_Department.CourseID = Exam.ExamID INNER JOIN
                         ExamSchedule ON Exam.ExamID = ExamSchedule.ExamID INNER JOIN
                         Staff_Teaching ON Course_Department.TeachingID = Staff_Teaching.TeachingID
WHERE        (Staff_Teaching.TeachingID = @GetTeachingID)

COMMIT 


BEGIN TRANSACTION
SET @GetExamDate=(SELECT Exam.Date  
FROM Exam
WHERE (ExamID = @GetExamID))
COMMIT 

BEGIN TRANSACTION
SET @GetExamTime=(SELECT Exam.BegainTime  
FROM Exam
WHERE (ExamID = @GetExamID))
COMMIT 

BEGIN TRANSACTION
SELECT        ExamScheduleID
FROM          Exam INNER JOIN
              ExamSchedule ON Exam.ExamID = ExamSchedule.ExamID
WHERE        (ExamSchedule.ExamScheduleID = @ExamScheduleID) AND (Exam.Date LIKE @GetExamDate) AND (Exam.BegainTime<=@GetExamTime)
COMMIT 



END

我有5个查询，第一个将获得teachingid（1值）第二个将获得courseid（超过1个值）然后接下来的两个将采用courseid并获得考试日期和时间然后我想检查上一个查询中是否有任何结果

Answer 1

SQL Server中没有类似数组的东西。您可以使用#temp表暂时存储它。

SELECT Staff_Teaching.TeachingID
INTO #Temp
Staff_Teaching INNER JOIN
      Staff ON Staff_Teaching.StaffID = Staff.StaffID WHERE                    
     (Staff.StaffID = @StaffID) AND (Staff_Teaching.SemesterID = @SemesterID))

Temporary tables

将其作为

传递

SELECT Exam.Date  FROM Exam WHERE (ExamID IN SELECT * FROM #Temp)

Answer 2

你可以把它写成

declare @query = '(SELECT Exam.Date  FROM Exam WHERE (ExamID IN ('+@GetExamID+') )'

exec @query

将C＃中的@GetExamID作为逗号分隔字符串1,2,4,5，......

传递

您可以使用以下

将int数组转换为逗号分隔的字符串

var result = string.Join(",", arr);

如何在变量中存储sql查询

2 个答案: