class TruncateQuery_mysql


Expanded class hierarchy of TruncateQuery_mysql

Related topics


drupal/includes/database/mysql/, line 89
Query code for MySQL embedded database engine.

View source
class TruncateQuery_mysql extends TruncateQuery {
  public function __toString() {
    // TRUNCATE is actually a DDL statement on MySQL, and DDL statements are
    // not transactional, and result in an implicit COMMIT. When we are in a
    // transaction, fallback to the slower, but transactional, DELETE.
    if ($this->connection->inTransaction()) {
      // Create a comment string to prepend to the query.
      $comments = $this->connection->makeComment($this->comments);
      return $comments . 'DELETE FROM {' . $this->connection->escapeTable($this->table) . '}';
    else {
      return parent::__toString();


Contains filters are case sensitive
Namesort descending Modifiers Type Description
Query::$comments protected property An array of comments that can be prepended to a query.
Query::$connection protected property The connection object on which to run this query.
Query::$connectionKey protected property The key of the connection object.
Query::$connectionTarget protected property The target of the connection object.
Query::$nextPlaceholder protected property The placeholder counter.
Query::$queryOptions protected property The query options to pass on to the connection object.
Query::$uniqueIdentifier protected property A unique identifier for this query object.
Query::comment public function Adds a comment to the query.
Query::getComments public function Returns a reference to the comments array for the query.
Query::nextPlaceholder public function Gets the next placeholder value for this query object. Overrides QueryPlaceholderInterface::nextPlaceholder
Query::uniqueIdentifier public function Returns a unique identifier for this object. Overrides QueryPlaceholderInterface::uniqueIdentifier
Query::__clone public function Implements the magic __clone function.
Query::__sleep public function Implements the magic __sleep function to disconnect from the database.
Query::__wakeup public function Implements the magic __wakeup function to reconnect to the database.
TruncateQuery::$table protected property The table to truncate.
TruncateQuery::compile public function Implements QueryConditionInterface::compile().
TruncateQuery::compiled public function Implements QueryConditionInterface::compiled().
TruncateQuery::execute public function Executes the TRUNCATE query. Overrides Query::execute
TruncateQuery::__construct public function Constructs a TruncateQuery object. Overrides Query::__construct
TruncateQuery_mysql::__toString public function Implements PHP magic __toString method to convert the query to a string. Overrides TruncateQuery::__toString