Use cases
Like in most desktop file managers, consider checkboxes prepended to list entries, with an "all" entry above them:
-
Sometimes, which table a known key is stored within isn't known, meaning that the user must choose each table and attempt the query individually. This isn't feasible with the amount of tables individually exposed:

I'd consequently like to be able to select the tables to search across, to include them.
-
Additionally, sometimes I want to search solely within a few specific tables to ensure that a key or value is within them. To accomplish this, I would like to be able to exclude certain tables.