CREATE TABLE temperature (city_id VARCHAR2, Feb VARCHAR2)
CREATE TABLE city (city VARCHAR2, city_id VARCHAR2)

Which city has the highest temperature in February?
SELECT T1.city FROM city AS T1 JOIN temperature AS T2 ON T1.city_id = T2.city_id ORDER BY T2.Feb DESC LIMIT 1
SELECT "T1"."city" FROM "city" "T1" JOIN "temperature" "T2" ON "T1"."city_id" = "T2"."city_id" ORDER BY "T2"."Feb" DESC FETCH FIRST 1 ROWS ONLY