CREATE TABLE table_204_550 (id DECIMAL, "event" TEXT, "record" TEXT, "athlete" TEXT, "date" TEXT, "meet" TEXT, "place" TEXT)

what is the first athlete in teh 100m event ?
SELECT "athlete" FROM table_204_550 WHERE "event" = '100 m' ORDER BY "date" LIMIT 1
SELECT "athlete" FROM "table_204_550" WHERE "event" = '100 m' ORDER BY "date" NULLS FIRST LIMIT 1