/**
  * INTERNAL: Appends an Oracle specific Timestamp, if usesNativeSQL is true otherwise use the ODBC
  * format. Native Format: to_timestamp ('1997-11-06 10:35:45.656' , 'yyyy-mm-dd hh:mm:ss.ff')
  */
 protected void appendTimestamp(java.sql.Timestamp timestamp, Writer writer) throws IOException {
   if (usesNativeSQL()) {
     writer.write("to_timestamp('");
     writer.write(Helper.printTimestamp(timestamp));
     writer.write("','yyyy-mm-dd HH24:MI:SS.FF')");
   } else {
     super.appendTimestamp(timestamp, writer);
   }
 }