title: Find max value of a row in SQL
body: <p>I got a table like this</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>Contract</th>
  <th>value 1</th>
  <th>Value 2</th>
  <th>Value 3</th>
  <th>Value 4</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>A1</td>
  <td>1</td>
  <td>3</td>
  <td>4</td>
  <td>8</td>
  </tr>
  <tr>
  <td>A2</td>
  <td>9</td>
  <td>3</td>
  <td>8</td>
  <td>3</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>How can I find max value of 1 2 3 4 5 of each contract</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>Contract</th>
  <th>value 1</th>
  <th>Value 2</th>
  <th>Value 3</th>
  <th>Value 4</th>
  <th>Maxvalue</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td>A1</td>
  <td>1</td>
  <td>3</td>
  <td>4</td>
  <td>8</td>
  <td>8</td>
  </tr>
  <tr>
  <td>A2</td>
  <td>9</td>
  <td>3</td>
  <td>8</td>
  <td>3</td>
  <td>9</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>Please help.</p>