CREATE TABLE table_203_308 (id DECIMAL, "athlete" TEXT, "nation" TEXT, "olympics" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

who has won more medals ? shaun white or kelly clark ?
SELECT "athlete" FROM table_203_308 WHERE "athlete" IN ('shaun white', 'kelly clark') ORDER BY "total" DESC LIMIT 1
SELECT "athlete" FROM "table_203_308" WHERE "athlete" IN ('shaun white', 'kelly clark') ORDER BY "total" DESC NULLS LAST LIMIT 1