title: Existance in JSON field check query
body: <p>I'm using <strong>PostgreSQL JSON</strong> type field in my database.</p>
  
  <p>JSON format:</p>
  
  <pre><code>[
     {"id": "13", "something": "not_important"},
     {"id": "5426565165191919", "something": "not_important"},
     {"id": "46", "something": "not_important"}
     ...
  ]
  </code></pre>
  
  <p>List of IDs like <code>["13", "46", "84"]</code>.</p>
  
  <p>How to make query that tell me that some ID is not exists? (Not important which one.)</p>