Flatten nested JSON using jq

Question

I\'d like to flatten a nested json object, e.g. {\"a\":{\"b\":1}} to {\"a.b\":1} in order to digest it in solr.

I have 11 TB of json files whi

Answer 1

Here is a solution that uses tostream, select, join, reduce and setpath

  reduce ( tostream | select(length==2) | .[0] |= [join(".")] ) as [$p,$v] (
     {}
     ; setpath($p; $v)
  )