public SelectExtender::range($start = NULL, $length = NULL)
Restricts a query to a given range in the result set.
If this method is called with no parameters, will remove any range directives that have been set.
$start: The first record from the result set to return. If NULL, removes any range directives that are set.
$length: The number of records to return from the result set.
\Drupal\Core\Database\Query\SelectInterface The called object.
Overrides SelectInterface::range
public function range($start = NULL, $length = NULL) { $this->query->range($start, $length); return $this; }
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Database!Query!SelectExtender.php/function/SelectExtender::range/8.1.x