SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toYYYYMM (children 1)
     ExpressionList (children 1)
      Function toDateTime (children 1)
       ExpressionList (children 1)
        Literal \'2017-07-21T11:22:33\'
