public function exec($sql_string)
	{
		$this->sql_string = $sql_string;
		$query = sasql_query( $this->connection, $this->sql_string );
		if ( $query ) {
			return new SQLAnywhereQuery( $query, $this->connection );
		} else {
			throw new Exception("SQL String Problem :: " . sasql_error( $this->connection ), 110);		
		}
		return 0;
	}