SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function multiIf (children 1)
     ExpressionList (children 3)
      Literal NULL
      Function CAST (children 1)
       ExpressionList (children 2)
        Literal \'65536\'
        Literal \'UInt32\'
      Function CAST (children 1)
       ExpressionList (children 2)
        Literal \'3\'
        Literal \'Int32\'
