The idea is good, but the UI is all but immersive.

Things that would it make more immersive:

- autocomplete

- and/or the ability to view the schema alongside the query (on a wide enough screen)

- a way to copy table and column names easily with a click (table names cannot be selected at all!)

- ability to just add more queryies under/over the already executed ones, instead of only being able to replace them.