Table: race_results_30
Columns: year
entrant
chassis
engine
points

Question: What is the most points earlier than 1953 with a Ferrari 375/50 chassis?
SQL: SELECT MAX("points") FROM race_results_30 WHERE "year" < 1953 AND "chassis" = 'ferrari 375/50'

Question: What is the latest year with more than 0 points?
SQL: SELECT MAX("year") FROM race_results_30 WHERE "points" > 0

Question: What year were there less than 1.5 points and an Entrant of escuderia bandeirantes, and a maserati straight-4 engine?
SQL: SELECT "year" FROM race_results_30 WHERE "points" < 1.5 AND "entrant" = 'escuderia bandeirantes' AND "engine" = 'maserati straight-4'

Question: What is the number of points for the Entrant of escuderia bandeirantes earlier than 1952?
SQL: SELECT SUM("points") FROM race_results_30 WHERE "entrant" = 'escuderia bandeirantes' AND "year" < 1952