An array of strings added as to the group by, keyed by the string to avoid duplicates. Type:

public ConditionAggregate::compile($conditionContainer)

protected Query::compile() Compiles

public QueryAggregate::existsAggregate($field, $function,

The SQL storage entity query aggregate class. Hierarchy class \Drupal\Core\Entity\Query\

protected Query::isSimpleQuery() Determines

protected QueryAggregate::addGroupBy()

protected QueryAggregate::finish()

Implements entity query conditions for SQL databases. Hierarchy class \Drupal\Core\Entity\Query\

public QueryFactory::getAggregate(EntityTypeInterface $entity_type