CREATE TABLE table_203_742 (id NUMBER, "rnd" NUMBER, "date" CLOB, "race name" CLOB, "circuit" CLOB, "city/location" CLOB, "pole position" CLOB, "fastest lap" CLOB, "winning driver" CLOB, "winning team" CLOB, "report" CLOB)

how many circuits did were run ?
SELECT COUNT("circuit") FROM table_203_742
SELECT COUNT("circuit") FROM "table_203_742"