   <th>name</th>
                <th>purpose</th>
                <th>type</th>
                <th>required?</th>
                <th>default</th>
                <th>choices</th>
            </tr>
            <tr>
                <td><code>bind</code></td>
                <td>Parameters to bind to SQL</td>
                <td>expression</td>
                <td>No</td>
                <td><code>None</code></td>
                <td>
                </td>
            </tr>
            <tr>
                <