PI Performance Tree > SQL Statements Dimension

I do not understand how the Performance Tree > SQL Statements Dimension relates to the time frame selected.  Statements I know have not been run within the time frame selected continue to show in the Performance Tree.  What am I missing?

Here is a simplified example:

SELECT id,[name] FROM myTable WHERE [name] LIKE '%jason%'

It IS possible and likely that the query is getting run with different variables:

SELECT id,[name] FROM myTable WHERE [name] LIKE '%john%'

However, when I look at the View SQL Text in the Overview tab I'm only seeing the initial query logged.