title: How can i take the element i want with SQL?
body: <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>time</th>
  <th>staffID</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>02-21 9:10:23</td>
  <td>1</td>
  </tr>
  <tr>
  <td>02-21 9:10:24</td>
  <td>1</td>
  </tr>
  <tr>
  <td>02-21 9:10:27</td>
  <td>1</td>
  </tr>
  <tr>
  <td>02-21 9:11:13</td>
  <td>3</td>
  </tr>
  <tr>
  <td>02-21 9:11:14</td>
  <td>3</td>
  </tr>
  <tr>
  <td>02-21 9:12:19</td>
  <td>4</td>
  </tr>
  <tr>
  <td>02-21 9:12:33</td>
  <td>4</td>
  </tr>
  <tr>
  <td>02-21 9:12:35</td>
  <td>4</td>
  </tr>
  <tr>
  <td>02-21 9:13:49</td>
  <td>2</td>
  </tr>
  <tr>
  <td>02-21 9:13:51</td>
  <td>2</td>
  </tr>
  <tr>
  <td>02-21 9:13:53</td>
  <td>2</td>
  </tr>
  <tr>
  <td>02-21 9:13:55</td>
  <td>2</td>
  </tr>
  <tr>
  <td>02-21 9:13:57</td>
  <td>2</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>i wanna get the each staff value in the early one
  like</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>time</th>
  <th>StaffId</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>02-21 9:10:23</td>
  <td>1</td>
  </tr>
  <tr>
  <td>02-21 9:11:13</td>
  <td>3</td>
  </tr>
  <tr>
  <td>02-21 9:12:19</td>
  <td>4</td>
  </tr>
  <tr>
  <td>02-21 9:13:49</td>
  <td>2</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>i have no idea about it, sorry</p>