title: Append Key into JSON_OBJ_COLUMN - Oracle
body: <p>In Oracle <strong>12c</strong> I created one table with json objects.</p>
  <p>Imagine the next sample:</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>id</th>
  <th>date</th>
  <th>json_obj</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>1</td>
  <td>01-MAY-2021</td>
  <td>{   key_1: val1, key_2: val2}</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>Now I want to <strong>update key_2</strong> value, and <strong>append key_3: val3</strong> into the same json object related with <strong>id 1</strong>.</p>
  <p>That could be edited? or I must to overwrite?</p>