Column <str> named outside a aggregate function in a SELECT with
  HAVING but no GROUP BY

  Explanation:  In select expressions with a HAVING clause but
  without a GROUP BY clause, you cannot directly name columns in
  the select list or HAVING clause.  You can refer to them only as
  aggregate function arguments, or in a WHERE clause.

  User Action:  Either make the column named in the message an
  aggregate function argument, or if it is in a HAVING clause,
  change the HAVING clause to a WHERE clause.