SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 3)
    Identifier A
    Identifier B_str
    Function toString (children 1)
     ExpressionList (children 1)
      Identifier cc
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 3)
           Identifier A
           Function toString (alias B_str) (children 1)
            ExpressionList (children 1)
             Identifier B
           Function SUM (alias cc) (children 1)
            ExpressionList (children 1)
             Identifier C
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier decimal
          ExpressionList (children 2)
           Identifier A
           Identifier B_str