Question

I have two tables defined as follow:

Courses

course ID     course Name
1             Math
2             Science
3             geography

and another table (its use is to show enrolled students in courses):

student_courses

course ID     student ID      Final cost
1             2               100
2             3               200

I need a SQL statement that selects only the courses that a certain student (its value is a parameter from a control on my page -but that is not my problem) isn’t enrolled in….

My latest try is this:

SELECT 
   Courses.[Course ID], Courses.[Course name] 
FROM 
   Courses, student_courses 
where 
   Courses.[Course ID] <> student_courses.[Course ID]

Answer 1

SELECT [Course ID], [Course name] 
FROM Courses
WHERE [Course ID] NOT IN 
 (SELECT Course ID from student_courses WHERE [student ID]=1)