title: OPENROWSET inserts null
body: <p>I am using this:</p>
  
  <pre><code>insert into bla select * 
  FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0',
      'Excel 8.0;HDR=YES;Database=c:\bla.xls',
      'select * from [Sheet1$]');
  </code></pre>
  
  <p>but for some reason some values contain null although the original data definately contains values (e.g. 'abc'). What could be the reason for this strange behaviour. Thanks.</p>
  
  <p>Chris</p>