protected QueryAggregate::addAggregate()
Adds the aggregations to the query.
\Drupal\Core\Entity\Query\Sql\QueryAggregate Returns the called object.
protected function addAggregate() { if ($this->aggregate) { foreach ($this->aggregate as $aggregate) { $sql_field = $this->getSqlField($aggregate['field'], $aggregate['langcode']); $this->sqlExpressions[$aggregate['alias']] = $aggregate['function'] . "($sql_field)"; } } return $this; }
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Entity!Query!Sql!QueryAggregate.php/function/QueryAggregate::addAggregate/8.1.x