Expanded class hierarchy of SelectInterface in Drupal 9
- interface \Drupal\Core\Database\Query\ConditionInterface; interface \Drupal\Core\Database\Query\AlterableInterface; interface \Drupal\Core\Database\Query\ExtendableInterface; interface \Drupal\Core\Database\Query\PlaceholderInterface
- interface \Drupal\Core\Database\Query\SelectInterface