I want to combine following queries .

Question

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SQL

;WITH MyCte(EType,EventDate) AS
(
SELECT 'Exam',E.DateOfExam FROM tbl_ExamCreation E
UNION ALL
SELECT 'Lecture',LS.StartDateTime FROM tbl_LectureScheduling LS
)
 
SELECT EType,EventDate FROM MyCte ORDER BY 1 DESC

------------------------------------

SQL

SELECT     tbl_ExamCreation.Exam_ID, tbl_ExamCreation.ExamName, tbl_ExamAttendence.StudentID, tbl_ExamAttendence.Exam_ID AS Expr1, 
                      tbl_LectureAttendence.StudentID AS Expr2, tbl_LectureAttendence.LectureScheduleID, tbl_LectureAttendence.status, tbl_Lectures.LectureID, 

tbl_Lectures.LectureName,
                       tbl_LectureScheduling.LectureScheduleID AS Expr3, tbl_LectureScheduling.LectureID AS Expr4, tbl_LectureScheduling.StartDateTime, 
                      tbl_ExamCreation.DateOfExam
FROM         tbl_LectureScheduling INNER JOIN
                      tbl_LectureAttendence ON tbl_LectureScheduling.LectureScheduleID = tbl_LectureAttendence.LectureScheduleID INNER JOIN
                      tbl_Lectures ON tbl_LectureScheduling.LectureID = tbl_Lectures.LectureID CROSS JOIN
                      tbl_ExamCreation INNER JOIN
                      tbl_ExamAttendence ON tbl_ExamCreation.Exam_ID = tbl_ExamAttendence.Exam_ID
WHERE     (tbl_ExamAttendence.StudentID = 1044) AND (tbl_LectureAttendence.StudentID = 1044)

Posted 11-Aug-14 18:15pm

m-shraddha

Updated 11-Aug-14 18:16pm

Dilan Shaminda

v2

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Comments

Dilan Shaminda 12-Aug-14 0:18am

combine which queries? Question is not clear

Sergey Alexandrovich Kryukov 12-Aug-14 0:26am

This is not a question, sorry. Well, why not combining them?..
—SA

m-shraddha 12-Aug-14 0:40am

I want to combine 1st and 2nd block of the query

2 solutions

Solution 2

SQL

;WITH MyCte(EType,EventDate,EName,EStatus) AS
(
SELECT     'Exam' AS Expr1, E.DateOfExam, E.ExamName,tbl_ExamAttendence.status
FROM         tbl_ExamCreation AS E INNER JOIN
                      tbl_ExamAttendence ON E.Exam_ID = tbl_ExamAttendence.Exam_ID
WHERE     (tbl_ExamAttendence.StudentID = 1044)
UNION ALL
SELECT     'Lecture' AS Expr1, LS.StartDateTime, tbl_Lectures.LectureName,tbl_LectureAttendence.status
FROM         tbl_LectureScheduling AS LS INNER JOIN
                      tbl_LectureAttendence ON LS.LectureScheduleID = tbl_LectureAttendence.LectureScheduleID INNER JOIN
                      tbl_Lectures ON LS.LectureID = tbl_Lectures.LectureID
WHERE     (tbl_LectureAttendence.StudentID = 1044)
)

SELECT TOP 5 EType,EventDate,EName,EStatus FROM MyCte ORDER BY EventDate DESC

Posted 11-Aug-14 19:22pm

m-shraddha

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Mehdi Gholam · Accepted Answer · 2014-08-11T18:44:00

Solution 1

To combine queries you should first have the same number of columns and they should logically be the same type, then you can use UNION like you have in the first "block".

Posted 11-Aug-14 18:44pm

Mehdi Gholam