function Connection::nextIdDelete

File

core/modules/mysql/src/Driver/Database/mysql/Connection.php, line 364

Class

Connection

MySQL implementation of \Drupal\Core\Database\Connection.

Namespace

Code

public function nextIdDelete() {
  @trigger_error(__METHOD__ . '() is deprecated in drupal:10.2.0 and is removed from drupal:11.0.0. Modules should use instead the keyvalue storage for the last used id. See https://www.drupal.org/node/3349345', E_USER_DEPRECATED);
  // While we want to clean up the table to keep it up from occupying too
  // much storage and memory, we must keep the highest value in the table
  // because InnoDB uses an in-memory auto-increment counter as long as the
  // server runs. When the server is stopped and restarted, InnoDB
  // re-initializes the counter for each table for the first INSERT to the
  // table based solely on values from the table so deleting all values would
  // be a problem in this case. Also, TRUNCATE resets the auto increment
  // counter.
  try {
    $max_id = $this->query('SELECT MAX(value) FROM {sequences}')
      ->fetchField();
    // We know we are using MySQL here, no need for the slower ::delete().
    $this->query('DELETE FROM {sequences} WHERE value < :value', [
      ':value' => $max_id,
    ]);
  } catch (DatabaseException $e) {
  }
}