The SSN is stored as a MD5 hashed value.
The combination of SSN, PKT and FICE_NBR in table A does not have a match on the combination of SSN, PKT and FICE_NBR in table B.
Ah, thanks, Gary. I feel much better now.
Shifting gears a bit, you might want to consider something a little bit more than simple MDF hashing. A simple billion row rainbow table (which is nothing on the machines today) would quickly unravel all of the SSNs. Even adding a salt to the MD5 would be better although that would likely still fail an audit.
is pronounced ree-bar and is a Modenism for R
First step towards the paradigm shift of writing Set Based code: Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair
How to post code problemsHow to post performance problemsForum FAQs