title: How to perform `or` in jq?
body: <p>I got the following results.</p>
  
  <pre><code>$ jq '.[].a,.[].b' &lt;&lt;&lt; '[{"a": 1},  {"b": 2}]'
  1
  null
  null
  2
  $ jq '.[] | select(.a or .b)' &lt;&lt;&lt; '[{"a": 1},  {"b": 2}]'
  {
    "a": 1
  }
  {
    "b": 2
  }
  </code></pre>
  
  <p>But I want to search either "a" and "b" and the output that I would like is this.</p>
  
  <pre><code>1
  2
  </code></pre>
  
  <p>What is the proper way to perform this <code>or</code> operation? Thanks.</p>