[ZeroGravitas]

I've struggled with the jq language when doing complicated things, but generally felt it was just the problem that was tricky. Generally I feel like I'm learning an actual useful language, though I guess Perl, Regex fall into that same category, what seems impenetreble at first later becomes almost second nature as you use $ to mean end of line in vi and so on. Then if you don't do it for a while, you forget the more obscure bits.

My approach to the example would be to use `.[] | .k1` which I think does what you want, and like bash command line pipes, you can build up to it semi-interactively.

The bits I struggle with JQ often involve irregular json, where a value might be missing, or null, or a list, not sure what the idiomatic way to deal with that is if there is one.