I need help using DISTINCT in a query

Hi Experts,
I have 2 tables with SSN's (TableA and TableB).  I want to find the DISNTICT SSN's on both tables, and then do a query that returns a list of the SSN's that exist in TableB but not in TableA.  How can I do this?

Thanks in advance,
mrotor
mainrotorAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Kelvin SparksCommented:
SELECT b.SSN
FROM (SELECT DISTINCT SSN FROM tableB) b LEFT JOIN (SELECT DISTINCT SSN FROM TableA) a ON
a.SSN = b.SSN
WHERE a.SSN is NULL


Kelvin
0
awking00Information Technology SpecialistCommented:
select ssn from tableb except select ssn from tablea
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server 2008

From novice to tech pro — start learning today.