Cannot use Aggregator IID in Contextual Filter

When attempting to use the Contextual filter to select a specific Aggregator item, I get the following error:

Notice: Undefined index: highlighted in include() (line 109 of .../sites/all/themes/crcom/page.tpl.php).
Warning: Illegal offset type in SelectQuery->fields() (line 1330 of .../includes/database/select.inc).
PDOException: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM aggregator_item aggregator_item WHERE (iid IN ('45'))' at line 1: SELECT FROM {aggregator_item} aggregator_item WHERE (iid IN (:db_condition_placeholder_0)) ; Array ( [:db_condition_placeholder_0] => 45 ) in views_handler_argument_aggregator_iid->title_query() (line 17 of .../sites/all/modules/views/modules/aggregator/views_handler_argument_aggregator_iid.inc).

It seems to be a problem with a lack of a table alias in the SQL query in the handler file (primarily because the fields() member is being invoked on the query object) and can be resolved by adding a table alias (e.g. 'i') like so:

    $result = db_select('aggregator_item', 'i')
      ->condition('iid', $this->value, 'IN')
      ->fields('i', array('title'))
      ->execute();