How many points were there before 1979 with a ferrari 312b2 chassis?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" text
);
SELECT "points" FROM "complete_formula_one_world_championship_" WHERE "year"<1979 AND "chassis"='ferrari 312b2';