Question

I need a Mysql query for my following problem.

I have two tables.

1. Exam with fields id and examname

2. Exam_Applied with fields id , examname and student_id

Here student_id is the id of student who applied the exam and I am storing in Exam_Applied

Now I need a query to Select the examname From Table Exam which are not applied by the particular student_id

help me plz.

Answer 1

You can use NOT IN to answer your question. Basically what it does is inside subquery, it gets all the examname taken by the specific student. The NOT IN checks the examName of table Exam which are not present on table Exam_Applied

SELECT  id, examName
FROM    Exam
WHERE   examName NOT IN
        (
            SELECT examName
            FROM Exam_Applied
            WHERE Student_ID = 'idHERE'
        )

Hope this makes sense