Well you've stumbled upon an Automation Tool activity. You will need an automated tool, or test harness that will fire SQL requests to the DB during a load test. Using a tool is the only way to repeat the process as necessary in Performance Engineering. Visual Studio, can be a source or tool to do this. I use load injectors from LoadRunner, Empirix, or MACT to fire requests to the DB. The most important thing to functionally decomposite from the business requirements is how many transactions per time slot is needed. Verify this is the only transactions (the SQL) during the inspection. If this is the only transaction under load you maybe able to use Visual Studio...or MACT.