CREATE TABLE table_204_396 (id DECIMAL, "country" TEXT, "masters" DECIMAL, "u.s. open" DECIMAL, "the open" DECIMAL, "pga" DECIMAL, "total" DECIMAL)

which country has the most pga championships .
SELECT "country" FROM table_204_396 ORDER BY "pga" DESC LIMIT 1
SELECT "country" FROM "table_204_396" ORDER BY "pga" DESC NULLS LAST LIMIT 1