Question

I have an injection table called StudentSchool that contains :

StudentSchoolID  StudentId   SchoolID
1                233         22

But now I want to make the table with composite primary key like this:

StudentId   SchoolID
    233         22

In the first case I select using

select * from StudentSchool  
where (StudentId = 233) and (SchoolID = 22)      

but in the second case how to do that with it as it is a primary key

Answer 1

I’m not sure if I understand the question correctly.
If you want the student with StudentId 233 and SchoolId 22, then it’s the same query like for the first case.