hen you choose in the Arguments Section "Action to take if argument is not present" the option "Display empty text".</li>


</ul>

Parallels between the components in the Views interface and an sql query:

<table>
  <thead>
    <tr>
      <th>Sql Query</th>
      <th>Views Component</th>
    <tr>
  </thead>
  <tr>
    <td>SELECT n.title, u.name</td>
    <td>fields</td>
  </tr>
  <tr>
    <td>FROM {node} n  base table</td>
    <td>view type</td>
  </tr>
  <tr>
    <td>INNER JOIN {users} u ON n.uid = u.uid</t