troubleshooting Question

SQL Server Complex join

Avatar of SharonBernal
SharonBernal asked on
Microsoft SQL ServerMicrosoft SQL Server 2008
2 Comments2 Solutions333 ViewsLast Modified:
I have a query as follows:

select * from TBL1 inner join TBL2 where tb1.groupkey=tbl2.groupkey

I want to keep these records, however here's the problem, if groupkey is null or ZZ I need to execute the same select with a different table and where condition

select * from TBL1 inner join TBL3 where tb1.groupkey=tbl3.groupkey

Finally if this brings back duplicates I need to set groupkey to null.

I need help designing this query.
ASKER CERTIFIED SOLUTION
Join our community to see this answer!
Unlock 2 Answers and 2 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 2 Answers and 2 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros