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2262617 - SAP IQ16 SP10.7 : 'Union' Query caused error 'dfo.cxx .. Can not evaluate expression'

Symptom

During migration project, 'dfo.cxx .. Can not evaluate expression' error is retured when executed an Join Update SQL including Union All.
   
  *  iqmsg & stack =>

       ********************************************************                                
       **                                                                                      
       **       Non-Fatal IQ Internal Error Detected                                           
       **       at dflib/dfo.cxx:13823  on thread 159 (TID 4)                                  
       **       Internal error at node: #31  Can not evaluate expression: SUM(COUNT(*)`(32))`(1)
       **       Error detected at DFO #31 Store                                                
       **                                                                                      
       ...
       .. df_Exception..df_ErrorCode..df_Evaluable...
       .. dfo..ValidateOutputVectors..
       .. dfo..ValidateOutputVectors..
       .. dfo..ValidateOutputVectors..
       .. dfo..ValidateOutputVectors..
       .. dfo..ValidateOutputVectors..
       .. dfo..ValidateOutputVectors..
       .. dfo..ValidateOutputVectors..
       .. dfo_Root7PrepareEv ..
       .. dfo_UpdateRoot.PrepareEv


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Environment

 SAP IQ 16.0

Product

SAP IQ 16.0 ; SAP Sybase IQ 15.2 ; SAP Sybase IQ 15.4 ; Sybase IQ 12.7

Keywords

"dfo.cxx:13823" ; ValidateOutputVectors ; "Can not evaluate expression" , KBA , BC-SYB-IQ , Sybase IQ , Problem

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