title: Microsoft Visual FoxPro Driver not fitering
body: <p>Hello i have a strange issue.<br>
  I am trying to filter a .dbf file and it seems i just can't.<br>
  Whenever i try to apply some kind of Criteria it bombs out..<br>
  For example :   </p>
  
  <pre><code>oCmd.CommandText = "select VAL([CD]),* from Y:\MYFILE.dat WHERE VAL([CD])&gt;800;"
  Dim reader = oCmd.ExecuteReader()
  reader.Read()
  reader.GetString(15)
  </code></pre>
  
  <p>i get a nice : 
  System.InvalidOperationException: 'No data exists for the row/column.'
  If i query the file without filtering it works just fine...any ideas.<br>
  Please do not recommend any other driver..they are just no working in my case due to Greek Encoding..only this driver and after Encoding Conversion provides data instead of gibberish : -λ╕λ?╕▀ ?-▀ⁿ▀</p>