protected QueryAggregate::addSortAggregate()
Builds the aggregation sort part of the query.
\Drupal\Core\Entity\Query\Sql\QueryAggregate Returns the called object.
protected function addSortAggregate() { if (!$this->count) { foreach ($this->sortAggregate as $alias => $sort) { $this->sqlQuery->orderBy($alias, $sort['direction']); } } return $this; }
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Entity!Query!Sql!QueryAggregate.php/function/QueryAggregate::addSortAggregate/8.1.x