We help IT Professionals succeed at work.
Get Started

Query to find delta / exceptions between 2 tables

221 Views
Last Modified: 2021-04-21
I have two tables (tableA, tableB) which basically contain the same data.  The key between the 2 is serial_number.  I need a query to return the delta between the 2 tables.

TableA contains all the data that should be in TableB but that is not the case.  I need to determine which serial numbers from TableA are not appearing in TableB.
Comment
Watch Question
IT Engineer
CERTIFIED EXPERT
Distinguished Expert 2017
Commented:
This problem has been solved!
Unlock 1 Answer and 14 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE