title: Deleting multiple keys at once with jq
body: <p>I need to delete multiple keys at once from some JSON (using <code>jq</code>), and I'm trying to learn if there is a better way of doing this, than calling map and del every time. Here's my input data:</p>
  
  <p><strong>test.json</strong></p>
  
  <pre><code>[
    {
      "label": "US : USA : English",
      "Country": "USA",
      "region": "US",
      "Language": "English",
      "locale": "en",
      "currency": "USD",
      "number": "USD"
    },
    {
      "label": "AU : Australia : English",
      "Country": "Australia",
      "region": "AU",
      "Language": "English",
      "locale": "en",
      "currency": "AUD",
      "number": "AUD"
    },
    {
      "label": "CA : Canada : English",
      "Country": "Canada",
      "region": "CA",
      "Language": "English",
      "locale": "en",
      "currency": "CAD",
      "number": "CAD"
    }
  ]
  </code></pre>
  
  <p>For each item, I want to remove the number, Language, and Country keys. I can do that with this command:</p>
  
  <pre><code>$ cat test.json | jq 'map(del(.Country)) | map(del(.number)) | map(del(.Language))'
  </code></pre>
  
  <p>That works fine, and I get the desired output:</p>
  
  <pre><code>[
    {
      "label": "US : USA : English",
      "region": "US",
      "locale": "en",
      "currency": "USD"
    },
    {
      "label": "AU : Australia : English",
      "region": "AU",
      "locale": "en",
      "currency": "AUD"
    },
    {
      "label": "CA : Canada : English",
      "region": "CA",
      "locale": "en",
      "currency": "CAD"
    }
  ]
  </code></pre>
  
  <p>However, I'm trying to understand if there is a <code>jq</code> way of specifying multiple labels to delete, so I don't have to have multiple <code>map(del())</code> directives?</p>