In email conversation with @h4yn0nnym0u5e, one somewhat frustrating thing that can crop up when using DB4S (manually, in the "Execute SQL" tab) is getting a join wrong, and the result set tries to return a huge number of rows. eg 1.6 mill rows

@MKleusberg @innermous @prutz1311 Any idea if there is some way we could catch that kind of thing - without needing a large amount of code change - and not let it go out of control?