Jason Brimhall shows how to build an extended event session which audits all SELECT statements:
I have to be a little honest here. Prior to somebody asking how they could possibly achieve a statement audit via extended events, I had not considered it as a tool for the job. I would have relied on Audit (which is Extended Event related), or some home grown set of triggers. In this particular request, Audit was not fulfilling the want and custom triggers was not an option. Another option might have included the purchase of third party software but there are times when budget does not allow for nice expensive shiny software.
So, with a little prodding, I hopped into the metadata and poked around a bit to see what I could come up with to achieve this low-budget audit solution.
Read the whole thing.