CREATE TABLE table_20122 ("Rd" FLOAT, "Race" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winning driver" TEXT, "Winning team" TEXT, "Report" TEXT)

how many winners were in round 8
SELECT COUNT("Winning driver") FROM table_20122 WHERE "Rd" = '8'
SELECT COUNT("Winning driver") FROM "table_20122" WHERE "Rd" = '8'