Help with sql query

Posted by user225269 on Stack Overflow See other posts from Stack Overflow or by user225269
Published on 2010-03-20T13:51:17Z Indexed on 2010/03/20 14:21 UTC
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mysql

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query

I have two tables: subject and student. I'm trying to count the number of subjects enrolled by each student. How do I do that?I'm trying the code below but it doesn't give the answer I need. Please help.

SELECT COUNT( subject.SUBJECT ) , student.IDNO, student.FIRSTNAME, subject.SUBJECT
FROM student, subject
GROUP BY subject.SUBJECT
LIMIT 0 , 30

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