CREATE TABLE table_204_64 (id DECIMAL, "place" TEXT, "code" DECIMAL, "area  ( km2 ) " DECIMAL, "population" DECIMAL, "most spoken language" TEXT)

which place had the largest population ?
SELECT "place" FROM table_204_64 ORDER BY "population" DESC LIMIT 1
SELECT "place" FROM "table_204_64" ORDER BY "population" DESC NULLS LAST LIMIT 1