Not sure if this is the right place, but I'm pretty stuck. I have 2 pretty large list ... like 1 million plus records & 10 Million plus.

One of them has a bit older data but I want to compare it to the new one and confirm the data.

The new one contains the 10 Million records.

Would importing into a both into a DB and using a VB compare string take forever?

Is there an efficient way?