What is the maximum fastest lap speed in the Monaco Grand Prix in 2008?
SELECT max(T2.fastestlapspeed) FROM races AS T1 JOIN results AS T2 ON T1.raceid = T2.raceid WHERE T1.year = 2008 AND T1.name = "Monaco Grand Prix"
maximum fastest lap speed = MAX(fastestlapspeed); Monaco Grand Prix in 2008 refers to WHERE year = 2008 AND name = 'Monaco Grand Prix'; joining two tables 'races' and 'results' with common field 'raceid';