CREATE TABLE results (fastestlapspeed NUMBER, raceid VARCHAR2)
CREATE TABLE races (raceid VARCHAR2, year VARCHAR2, name VARCHAR2)

What is the average fastest lap speed in race named 'Monaco Grand Prix' in 2008 ?
SELECT AVG(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"
SELECT AVG("T2"."fastestlapspeed") FROM "races" "T1" JOIN "results" "T2" ON "T1"."raceid" = "T2"."raceid" WHERE "Monaco Grand Prix" = "T1"."name" AND "T1"."year" = 2008