I don't mean to minimize the effort and contribution of this project in any way, and I understand the author is scratching their own itch, but I'm curious why this is specific to DuckDB? From skimming the homepage, it has generic querying capabilities. Isn't there a generic DB driver that can be swapped out and the TUI used on top of another DBMS?
DuckDB provides some really nice python APIs that other databases don't have, so it was a very easy way for me to get started. I'm considering/planning extending to other DBs using plugins. More info here: https://github.com/tconbeer/harlequin/issues/230
