jq基于键值过滤器查询json键

Question

I have a json file with key and the value is a json with key value pair. I would like to filter and extract the key based on the inner key value pair. Any help is greatly appreciated

Example json data:

{
    "key1": {
      "filterkey": "filtervalue",
      "key1": "value1"
    },
    "key2": {
      "key1": "value1",
      "key2": "value2"
    }
}

• Filter: "filterkey": "filtervalue"
• expected output: "key1"

Answer 1

if your input json is stable and you do not need to control any edge cases (arbitrary depth, a top-level type mismatch, eg "key1": "not a dict" ) then this solves your problem:

ret = []
for k, v in js.items():
    if v.get("filterkey") == "filtervalue":
        ret.append(k)

Answer 2

Run snippet to see output:

  var jsonObject = { "key1": { "filterkey": "filtervalue", "key1": "value1" }, "key2": { "key1": "value1", "key2": "value2" } }; function filterKey(jsonObject, keySearch, valueSearch) { var result = null; for (const key in jsonObject) { if (jsonObject.hasOwnProperty(key) && jsonObject[key][keySearch] !== undefined && jsonObject[key][keySearch] === valueSearch) { result = key; break; } } return result; } alert(filterKey(jsonObject, 'filterkey', 'filtervalue')); 

Answer 3

jq '.[] | select( .filterkey == "filtervalue") | to_entries[1]| .key'   sample.json

Select by filterkey, turn the objects into key value entires, then take the second entry's key. Output is:

"key1"

Answer 4

In the example, "key1" appears several times, but it looks like you want the outermost key name. If that's the case, then using to_entries is a good way to go, eg:

to_entries[]
| if .value.filterkey == "filtervalue" then .key else empty end

Or equivalently:

to_entries[]
| select(.value.filterkey == "filtervalue" )
| .key