SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function firstNonDefault (alias result) (children 1)
     ExpressionList (children 1)
      Literal NULL
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier result
