CREATE TABLE table_204_169 (id NUMBER, "athlete" CLOB, "event" CLOB, "race 1\ time" CLOB, "race 2\ time" CLOB, "total\ time" CLOB, "total\ rank" NUMBER)

how many athletes are there total ?
SELECT COUNT(DISTINCT "athlete") FROM table_204_169
SELECT COUNT(DISTINCT "athlete") FROM "table_204_169"