jq_multi_query.md

• Input data are multiple json files in sorted/ with this minimal structure:

{
  "dump_finished": "2021-12-14T10:43:42+01:00",
  "datasets": [
    ...
  ]
}

• Query all *.json files in sorted, slurp all results into a large array:

jq "{date: .dump_finished, count: .datasets | length}" sorted/*.json | jq -s

• Output is something like:

[
  {
    "date": "2014-11-04",
    "count": 765
  },
  {
    "date": "2015-06-19",
    "count": 804
  },
  ...
  {
    "date": "2021-12-14T10:43:42+01:00",
    "count": 2867
  }
]