final public function query (string $sql)
	{
		static::$lastQuery 	= $sql;
		$result 			= mysqli_query($this->connection, $sql);
		$this->confirmQuery($result);
		return $result;
	}
final public function query (string $sql)
	{
		static::$lastQuery 	= $sql;
		$result 			= mysqli_query($this->connection, $sql);
		$this->confirmQuery($result);
		return $result;
	}
final public function query ( string $ sql ) { static :: $ lastQuery = $ sql ; $ result = mysqli_query ( $ this -> connection , $ sql ) ; $ this -> confirmQuery ( $ result ) ; return $ result ; }
Querys the database with provided sql.
@param string $sql
@return mixed
Querys the database with provided sql .