By default it would only ever create a single results tab and replace the results in that tab every time you ran the query.

However, if you pinned that tab, the next time you ran the query it would instead create a new tab and leave the old one untouched. This would allow users to work on a query and easily compare the outputs of different versions of that query.

A nice bonus would be a link that lets you retrieve the code that produced a particular tab's results.