public function Truncate::__toString in Drupal 8
Same name in this branch
- 8 core/lib/Drupal/Core/Database/Query/Truncate.php \Drupal\Core\Database\Query\Truncate::__toString()
- 8 core/lib/Drupal/Core/Database/Driver/sqlite/Truncate.php \Drupal\Core\Database\Driver\sqlite\Truncate::__toString()
Same name and namespace in other branches
- 9 core/lib/Drupal/Core/Database/Query/Truncate.php \Drupal\Core\Database\Query\Truncate::__toString()
Implements PHP magic __toString method to convert the query to a string.
Return value
string The prepared statement.
Overrides Query::__toString
1 method overrides Truncate::__toString()
- Truncate::__toString in core/
lib/ Drupal/ Core/ Database/ Driver/ sqlite/ Truncate.php - Implements PHP magic __toString method to convert the query to a string.
File
- core/
lib/ Drupal/ Core/ Database/ Query/ Truncate.php, line 66
Class
- Truncate
- General class for an abstracted TRUNCATE operation.
Namespace
Drupal\Core\Database\QueryCode
public function __toString() {
// Create a sanitized comment string to prepend to the query.
$comments = $this->connection
->makeComment($this->comments);
// In most cases, TRUNCATE is not a transaction safe statement as it is a
// DDL statement which results in an implicit COMMIT. When we are in a
// transaction, fallback to the slower, but transactional, DELETE.
// PostgreSQL also locks the entire table for a TRUNCATE strongly reducing
// the concurrency with other transactions.
if ($this->connection
->inTransaction()) {
return $comments . 'DELETE FROM {' . $this->connection
->escapeTable($this->table) . '}';
}
else {
return $comments . 'TRUNCATE {' . $this->connection
->escapeTable($this->table) . '} ';
}
}