CREATE TABLE table_204_546 (id NUMBER, "year" NUMBER, "film" CLOB, "song" CLOB, "language" CLOB)

what language was used in only one film ?
SELECT "language" FROM table_204_546 GROUP BY "language" HAVING COUNT("film") = 1
SELECT "language" FROM "table_204_546" GROUP BY "language" HAVING COUNT("film") = 1