How to simplify aws DynamoDB query JSON output from the command line?

Question

I\'m working with The AWS Command Line Interface for DynamoDB.

When we query an item, we get a very detailed JSON output. You get something like this (it has been bu

Answer 1

Here is another approach. This may be a little brutal but it shows the basic idea.

def unwanted:    ["B","BOOL","M","S","L","BS","SS"];
def fixpath(p):  [ p[] | select( unwanted[[.]]==[] ) ];
def fixnum(p;v):
    if   p[-2]=="NS" then [p[:-2]+p[-1:],(v|tonumber)]
    elif p[-1]=="N" then [p[:-1], (v|tonumber)]
    else [p,v] end;

reduce (tostream|select(length==2)) as [$p,$v] (
    {}
  ; fixnum(fixpath($p);$v) as [$fp,$fv]      
  | setpath($fp;$fv)
)

Try it online!

Sample Run (assuming filter in filter.jq and data in data.json)

$ jq -M -f filter.jq data.json
{
  "ConsumedCapacity": null,
  "Count": 1,
  "Items": [
    {
      "Id": "app1",
      "Oldtypes": {
        "typeBS": [
          "VGVybWluYXRvcgo=",
          "VGVybWluYXRvciAyOiBKdWRnbWVudCBEYXkK",
          "VGVybWluYXRvciAzOiBSaXNlIG9mIHRoZSBNYWNoaW5lcwo=",
          "VGVybWluYXRvciA0OiBTYWx2YXRpb24K",
          "VGVybWluYXRvciA1OiBHZW5lc2lzCg=="
        ],
        "typeNS": [
          0,
          1,
          2,
          3,
          4,
          5
        ],
        "typeSS": [
          "foo",
          "bar",
          "baz"
        ]
      },
      "Parameters": {
        "nfs": {
          "IP": "172.16.0.178",
          "activated": true,
          "defaultPath": "/mnt/ebs/",
          "key": "dGhpcyB0ZXh0IGlzIGJhc2U2NC1lbmNvZGVk"
        },
        "ws": {
          "number": 5,
          "values": [
            "12253456346346",
            "23452353463464",
            "23523453461232",
            "34645745675675",
            "46456745757575"
          ]
        }
      }
    }
  ],
  "ScannedCount": 1
}