I'd like to aggregate a list of objects like this:
[ {"a": 1, "b": 2}, {"a": 3, "b": 4} ] To a single object with list values:
{ "a": [1,3], "b": [2,4] } I've scoured the docs but I think I just don't know the term for what I'm trying to do. Any ideas?
A straightforward and efficient approach would be:
reduce .[] as $o ({}; reduce ($o|keys_unsorted[]) as $k (.; .[$k] += [$o[$k]])) Here is another approach using reduce and to_entries:
reduce ( .[] | to_entries[] ) as {$key,$value} ({}; .[$key] += [$value]) 