CREATE TABLE table_204_409 (id DECIMAL, "date" TEXT, "race name" TEXT, "location" TEXT, "uci rating" DECIMAL, "winner" TEXT, "team" TEXT)

what was the uci rating of the last race of the tour ?
SELECT "uci rating" FROM table_204_409 ORDER BY id DESC LIMIT 1
SELECT "uci rating" FROM "table_204_409" ORDER BY "id" DESC NULLS LAST LIMIT 1