how to get some key and value from json using jq

Question

Here is my test.json file

{
  "top": "0",
  "sub": {
    "one": "1",
    "two": "2",
    "three": "3"
  }
}

I can use jq like this: cat test.json | jq '.top, .sub.two'

It returns:

"0"
"2"

Is it possible to return the key as well? So like below:

"top": "0"
"two": "2"

Thanks

Answer 1

For a valid JSON output:

{top} + (.sub | {two})