title: Convert all json keys to lowercase using JQ
body: <p>I'm looking to ingest a JSON file with arrays into my database. The json file with array items is as below:-</p>
  
  <pre><code>   {
    "campaignId": "11067182",
    "campaignName": "11067182",
    "channelId": "%pxbid_universal_site_id=!;",
    "channelName": "%pxbid_universal_site_id=!;",
    "placementId": "%epid!",
    "placementName": "%epid!",
    "publisherId": "%esid!",
    "publisherName": "%esid!",
    "hitDate": "2017-03-23",
    "lowRiskImpressions": "61485",
    "lowRiskPct": "64.5295",
    "moderateRiskImpressions": "1887",
    "moderateRiskPct": "1.9804",
    "highRiskImpressions": "43",
    "highRiskPct": "0.0451",
    "veryHighRiskImpressions": "860",
    "veryHighRiskPct": "0.9026",
    "totalRated": "95274",
    "unrated": "8",
    "unratedPct": "0.0084",
    "visibleCount": "64283",
    "pctVisible": "67.4660",
    "invisibleCount": "30999",
    "totalImpressions": "95282"
  }
  {
    "campaignId": "11067182",
    "campaignName": "11067182",
    "channelId": "%pxbid_universal_site_id=!;",
    "channelName": "%pxbid_universal_site_id=!;",
    "placementId": "%epid!",
    "placementName": "%epid!",
    "publisherId": "%esid!",
    "publisherName": "%esid!",
    "hitDate": "2017-03-22",
    "lowRiskImpressions": "17929",
    "lowRiskPct": "52.9379",
    "moderateRiskImpressions": "1872",
    "moderateRiskPct": "5.5273",
    "highRiskImpressions": "9",
    "highRiskPct": "0.0266",
    "veryHighRiskImpressions": "139",
    "veryHighRiskPct": "0.4104",
    "totalRated": "33850",
    "unrated": "18",
    "unratedPct": "0.0531",
    "visibleCount": "19967",
    "pctVisible": "58.9554",
    "invisibleCount": "13901",
    "totalImpressions": "33868"
  }
  </code></pre>
  
  <p>Is there a way to reproduce the same array, but with the keys converted to lowercase using <code>jq</code>?</p>