sql select with exact outcome

Posted by Shiro on Stack Overflow See other posts from Stack Overflow or by Shiro
Published on 2010-05-29T12:35:47Z Indexed on 2010/05/29 12:42 UTC
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Asking a simple question, just want everyone have fun to solve it. I got 2 tables. 1. Student 2. Course

Student

+----+--------+
| id | name   |
+----+--------+
|  1 | User1  |
|  2 | User2  |
+----+--------+

Course

+----+------------+------------+
| id | student_id | course_name|
+----+------------+------------+
|  1 |          1 | English    |
|  2 |          1 | Chinese    |
|  3 |          2 | English    |
|  4 |          2 | Japanese   |
+----+------------+------------+

I would like to get the result all student, who have taken English and Chinese, NOT English or Chinese.

Expected result:

    +----+------------+------------+
    | id | student_id | course_name|
    +----+------------+------------+
    |  1 |          1 | English    |
    |  2 |          1 | Chinese    |
    +----+------------+------------+

What we normally do is

select * from student join course on (student.id = course.student_id) WHERE course_name = 'English' OR course_name = 'Chinese'

but in this result I can get User2 record which is not my expected result. I want the record only display the User take the course English+Chinese only.

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