src/NGB/Db/MySQLy/MySQL.php
public function prepare( $query ) {
		$stmt = parent::prepare( $query );
		if ( $this->errno ) {
			throw new \Exception( $this->error );
		}
		return $this->stmt = $stmt;
	}
public function prepare( $query ) {
		$stmt = parent::prepare( $query );
		if ( $this->errno ) {
			throw new \Exception( $this->error );
		}
		return $this->stmt = $stmt;
	}
(non-PHPdoc)
@see mysqli::prepare()