public function Connection::nextIdDelete in Drupal 10
1 call to Connection::nextIdDelete()
- Connection::__destruct in core/
modules/ mysql/ src/ Driver/ Database/ mysql/ Connection.php
File
- core/
modules/ mysql/ src/ Driver/ Database/ mysql/ Connection.php, line 330
Class
- Connection
- MySQL implementation of \Drupal\Core\Database\Connection.
Namespace
Drupal\mysql\Driver\Database\mysqlCode
public function nextIdDelete() {
// 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) {
}
}