CREATE TABLE table_204_392 (id DECIMAL, "#" DECIMAL, "stadium" TEXT, "capacity" DECIMAL, "city" TEXT, "country" TEXT, "domed or retractable roof" TEXT)

which stadium holds the most people ?
SELECT "stadium" FROM table_204_392 ORDER BY "capacity" DESC LIMIT 1
SELECT "stadium" FROM "table_204_392" ORDER BY "capacity" DESC NULLS LAST LIMIT 1