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Too many instances

Author

Topic

nhuot1
Starting Member

1 Post

Posted - 2012-03-07 : 10:09:43

I'm relatively new to SQL report writing, and I need help.
I'm trying to pull all students who have a specific attribute. The problem is that each student has many attributes and even though I specify student_attribute = 'FF07' I get numerous entries (all identical) for each student.
How do I only retrieve a single entry for each student?
I use this code:

select t.id, t.last_name, t.first_name, b.student_attribute,
. . .

from t, b
where t.pidm = b.pidm
and b.student_attribute = 'FF07'

I tried using select distinct t.id, but I get the same results.
Any thoughts?

X002548
Not Just a Number

15586 Posts

Posted - 2012-03-07 : 10:17:48

you're gonna have to give us more than that

Read the hint link in my sig

Brett

8-)

Hint: Want your questions answered fast? Follow the direction in this link
http://weblogs.sqlteam.com/brettk/archive/2005/05/25/5276.aspx

Want to help yourself?

http://msdn.microsoft.com/en-us/library/ms130214.aspx

http://weblogs.sqlteam.com/brettk/

http://brettkaiser.blogspot.com/

DonAtWork
Master Smack Fu Yak Hacker

2167 Posts

Posted - 2012-03-07 : 10:18:14

try this:


SELECT DISTINCT
	t.id, t.last_name, t.first_name, b.student_attribute
FROM
	t
INNER JOIN
	b
ON
	t.pidm = b.pidm
AND
	b.student_attribute = 'FF07'

EDIT: lose your mind reading hat Brett?

http://weblogs.sqlteam.com/jeffs/archive/2008/05/13/question-needed-not-answer.aspx
How to ask: http://weblogs.sqlteam.com/brettk/archive/2005/05/25/5276.aspx
For ultra basic questions, follow these links.
http://www.sql-tutorial.net/
http://www.firstsql.com/tutor.htm
http://www.w3schools.com/sql/default.asp

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2012-03-07 : 10:21:07

just a shot: duplicate students in table "t" with different ids

garbage in / garbage out

No, you're never too old to Yak'n'Roll if you're too young to die.

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