CREATE TABLE table_203_392 (id NUMBER, "rank" CLOB, "belt alternate 1" CLOB, "belt alternate 2" CLOB, "belt alternate 3" CLOB, "belt alternate 4" CLOB)

how many different ranks exist for karate belts ?
SELECT COUNT(DISTINCT "rank") FROM table_203_392
SELECT COUNT(DISTINCT "rank") FROM "table_203_392"