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Selecting the inverse of distinct

Hi all.
I would like to select the fields that exists more than one time.

Description of my table is:

Create table MYTABLE (CLASS_ID char(2),STUDENT_ID char(2));

I need to select the students that are in more than one class!

Thanks!

Jul 24 '05 #1
2 6968
If I read this one right, how about:

SELECT COUNT(*) AS C, STUDENT_ID FROM MYTABLE GROUP BY STUDENT_ID HAVING
C > 1

jo*********@yahoo.com wrote:
Hi all.
I would like to select the fields that exists more than one time.

Description of my table is:

Create table MYTABLE (CLASS_ID char(2),STUDENT_ID char(2));

I need to select the students that are in more than one class!

Thanks!

Jul 24 '05 #2
Yes that's it!

Thanks.

Jul 25 '05 #3

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