CREATE TABLE table_203_377 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

the team with the most gold medals
SELECT "nation" FROM table_203_377 ORDER BY "gold" DESC LIMIT 1
SELECT "nation" FROM "table_203_377" ORDER BY "gold" DESC NULLS LAST LIMIT 1