Recursive search values by key

Question

I have a JSON like this:

{ 
  \"A\": { \"error\": null },
  \"B\": { \"C\": {\"error\": \"error string\"}},
  \"C\": { \"D\": {\"error\": null}},
  \"D\": {          


        

Answer 1

Here is a solution that uses tostream and select

  tostream
| select(length==2 and .[0][-1]=="error" and .[1]!=null) as [$p,$v]
| $v