Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Fine records with duplicate ssn and date of birth but different record ids

Posted on 2009-04-13
5
Medium Priority
?
335 Views
Last Modified: 2012-05-06
I am stuck on this query which seems like it should be simple.
I have a table that has five columns:
member_id (PK)
last_name
first_name
social_security_no
birthdate

I am trying to find all records where a single person (same social_security_no and birthdate) has one or more different member_ids.
Any assistance is appreciated. Thanks.
0
Comment
Question by:c4e41961
5 Comments
 
LVL 22

Accepted Solution

by:
dportas earned 600 total points
ID: 24133153
SELECT *
FROM tbl t
WHERE EXISTS
 (SELECT 1
  FROM tbl
  WHERE social_security_no = t.social_security_no
   AND birthdate = t.birthdate
   AND member_id <> t.member_id);
0
 
LVL 1

Assisted Solution

by:joshbenner
joshbenner earned 200 total points
ID: 24133160
Something like this:
SELECT
  *,
  COUNT(*)
FROM myTable
GROUP BY social_security_no, birthdate
ORDER BY COUNT(*) DESC

Open in new window

0
 
LVL 1

Expert Comment

by:joshbenner
ID: 24133162
You could add a HAVING COUNT(*) > 1
0
 
LVL 15

Assisted Solution

by:MNelson831
MNelson831 earned 200 total points
ID: 24133174
Select * from MyTable where SSN in (

Select SSN from MyTable having Count(*) >1 group by SSN)
0
 

Author Closing Comment

by:c4e41961
ID: 31569689
Thanks!  I appreciate your solutions!
0

Featured Post

How to Use the Help Bell

Need to boost the visibility of your question for solutions? Use the Experts Exchange Help Bell to confirm priority levels and contact subject-matter experts for question attention.  Check out this how-to article for more information.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Why is this different from all of the other step by step guides?  Because I make a living as a DBA and not as a writer and I lived through this experience. Defining the name: When I talk to people they say different names on this subject stuff l…
This month, Experts Exchange sat down with resident SQL expert, Jim Horn, for an in-depth look into the makings of a successful career in SQL.
Via a live example, show how to backup a database, simulate a failure backup the tail of the database transaction log and perform the restore.
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.

824 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question