jq array of hashes to csv

So I have a data source like this:

{
  "things": [
    {
      "thing_name": "Bestco",
      "thing_id": 1
    },
    {
      "thing_name": "GreatCo",
      "thing_id": 2
    },
    {
      "thing_name": "DressCo",
      "thing_id": 3
    }
  ]
}

I want to get output like this:

$ echo '{"things":[{"thing_name":"Bestco","thing_id":1},{"thing_name":"GreatCo","thing_id":2},{"thing_name":"DressCo","thing_id":3}]}' |
  jq -r '.things | map(.thing_name, .thing_id, "n") | @csv' |
  sed -e 's/,"$//g' -e 's/^",//g' -e 's/^"$//g'
"Bestco",1
"GreatCo",2
"DressCo",3

$ 

Using a fake parameter seems like a hack and then needs to be clean up by sed to work. How do I do this with just jq.

Answer

Instead of trying to put literal newlines in your data, split the data into separate arrays (one per line of desired output), and pass each one to @csv.

s='{"things":[{"thing_name":"Bestco","thing_id":1},{"thing_name":"GreatCo","thing_id":2},{"thing_name":"DressCo","thing_id":3}]}'

jq -r '.things[] | [.thing_name, .thing_id] | @csv' <<<"$s"

…properly emits:

"Bestco",1
"GreatCo",2
"DressCo",3