jq - select objects with given key name

Question

I\'ve got an arbitrary structure with many levels, etc. I need to select all objects that contain a key named updateDate. How do I do that with jq? I came up with o

Answer 1

The accepted answer also produces null for every object that doesn't have the key.

What worked for me was:

jq '..|objects|.updateDate//empty'

The .updateDate//empty part means: if .updateDate is null (or false), skip it entirely.

This of course wouldn't work if you expect your key to have values of false or null. In that case, use this:

jq '..|objects|select(has("updateDate"))|.updateDate'