Add default limit command to commands on first fetch

[rlh1994]

When querying large tables I often forget to add a limit clause to by default, which causes the query to hang or the output not to load. It would be nice to have a setting that adds a default limit clause to queries until I scroll further/try and return/save all results if possible?

[Borvik]

I understand the idea behind this, however there are complications that prevent this solution.

First, since this extension allows you to run more than just SELECT statements, this absolutely would require a robust query parser to determine if a limit clause even could be added to a query - which it doesn't.

Second, it goes a bit against the design I had of "do not alter queries". Basically I want consistency in the queries... what you see is what you run - no hidden gimmicks or gotchas.

Perhaps an alternative though would be that there be the ability to cancel long-running queries like #62

[rlh1994]

That's entirely fair and makes perfect sense. How about an additional command that is something like Run Query (limit 100) or would that not be suitable for the same reasons?