Question

i want to rotate my table horizontally –

The tables are as follows:

Master_Choicecode

ChoiceCode      MainCourseId    CourseLevelId    InstituteId

Master_MainCourse

MainCourseId     MainCourseName   CourseLevelId   CourseProgram
   11                x                1             abc
   12                y                2             xyz

Master_CourseLevel

CourseLevelId    CourseLevelName     
   1                deg
   2                Dip

Master_Institute

Instituteid     InstituteName    Statusid
    1001           Insti1          100
    1002           Insti2          200

Master_InstituteStatus

StatusId   StatusName
  100            Status1
  200            Status2

Now using all these tables i want to show this:

CourseProgram   CourseLevelName  Status1(from Master_InstituteStatus)     Status2(from Master_InstituteStatus)    
    abc             Deg          Count of institutes belonging to status1  Count of institutes belonging to status2

Now this is what i have tried:

SELECT B.CourseProgram,C.CourseLevelName,
case when E.InstituteStatusName =' Status1' then COUNT(*) else null end as     Status1,
case when E.InstituteStatusName =' Status2' then COUNT(*) else null  end as  Status2,
FROM Master_ChoiceCode A 
inner join Master_MainCourse B on A.MainCourseID=B.MainCourseID
inner join Master_CourseLevel C on A.CourseLevelID=C.CourseLevelID  
inner join  Master_Institute D on A.InstituteID=D.InstituteID
inner join Master_InstituteStatus1 E on D.InstituteStatusID1=E.InstituteStatusID
where B.CourseLevelID IN(1,2)
GROUP BY B.CourseProgram,A.CourseLevelID,C.CourseLevelName,E.InstituteStatusName
order by B.CourseProgram,C.CourseLevelName;

But with this i get the output like this:

CourseProgram   CourseLevelName  Status1(from Master_InstituteStatus)     Status2(from Master_InstituteStatus)    
    abc             Deg          Count of institutes belonging to status1  
    abc             Deg                      Null                              Count of institutes belonging to status1

i got the solution to this is to use pivot…but i dont knw how shal i use Pivot with my current query.Please help me..

Answer 1

You’re close, but grouping on E.InstituteStatusName means you will not be able to combine the data onto one row. Rather than use the case statement with a count, you could use a conditional sum.

SELECT B.CourseProgram,C.CourseLevelName,
sum(case when E.InstituteStatusName =' Status1' then 1 else 0 end) as     Status1,
sum(case when E.InstituteStatusName =' Status2' then 1 else 0 end) as  Status2,
FROM Master_ChoiceCode A 
inner join Master_MainCourse B on A.MainCourseID=B.MainCourseID
inner join Master_CourseLevel C on A.CourseLevelID=C.CourseLevelID  
inner join  Master_Institute D on A.InstituteID=D.InstituteID
inner join Master_InstituteStatus1 E on D.InstituteStatusID1=E.InstituteStatusID
where B.CourseLevelID IN(1,2)
GROUP BY B.CourseProgram,A.CourseLevelID,C.CourseLevelName
order by B.CourseProgram,C.CourseLevelName;

This will effectively count the rows matching that status without the need for grouping on that field.