I have a table with some sensitive info like Driver License# stored. Would like to report on which user accesses/queries that field. Like when, how many rows, what is the login that accessed etc. What splunk app/feature that lets me achieve this?
I think you would need to setup an audit in the SQL server first, like described here:
http://solutioncenter.apexsql.com/auditing-select-statements-on-sql-server/
It will create an audit DB and you can read that DB with DB Connect.
Than you can either index that data or query directly from the DB using DB Connect, and alert from it.