I'm a big fan of miller (mlr) -- it's the tool I landed on when I needed to "graduate" from awk to look at CSV data. But when I read "go based" in your comment, I thought "nope, it's written in C". But no! It was ported to go -- very interesting!

The developer wrote a comprehensive document explaining the rationale behind the porting that answered all my questions and a lot more: https://github.com/johnkerl/miller/blob/main/README-go-port.....

Thought other miller/mlr fans (that don't follow its development) might find this interesting as well.

(The dasel tool looks very cool, too -- looks like a good complement to mlr and similar tools!)