Is a html table within a table valid?

Question

In html, is it valid to have a table inside of a table?

<table>
  <tr>
    <td>
      <table>
        <tr>
          <td></td>
        </tr>
      </table>
    </td>
  </tr>
  <tr></tr>
</table> 

question from:https://stackoverflow.com/questions/9764070/is-a-html-table-within-a-table-valid

Answer 1

Yes, perfectly valid.

By pasting what you have into the W3C validator, the only errors are regarding doctype, head tags, etc... nothing ever mentioned of nesting table within table (even after adding all the correct tags that it errored on) It suggests using a tbody

http://validator.w3.org/check