function StatementPrefetchIterator::fetchField
Returns a single field from the next record of a result set.
Parameters
$index: The numeric index of the field to return. Defaults to the first field.
Return value
mixed A single field from the next record, or FALSE if there is no next record.
Overrides StatementInterface::fetchField
File
- 
              core/
lib/ Drupal/ Core/ Database/ StatementPrefetchIterator.php, line 297  
Class
- StatementPrefetchIterator
 - An implementation of StatementInterface that prefetches all data.
 
Namespace
Drupal\Core\DatabaseCode
public function fetchField($index = 0) {
  return $this->fetchColumn($index);
}
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