>                                     </ScalarOperator>                                   </Compare>                                 </ScalarOperator>                               </Condition>                               <Then>                                 <ScalarOperator>                                   <Const ConstValue="(0)" />                                 </ScalarOperator>                               </Then>                               <Else>                                 <ScalarOperator>                                   <Const ConstValue="NULL" />                                 </ScalarOperator>                               </Else>                             </IF>                           </ScalarOperator>                         