CREATE TABLE table_203_501 (id NUMBER, "title" CLOB, "genre" CLOB, "sub\\u00addivisions" CLOB, "libretto" CLOB, "premiere date" CLOB, "place ,  theatre" CLOB)

what are the number of titles that premiered in the month of september ?
SELECT COUNT(DISTINCT "title") FROM table_203_501 WHERE "premiere date" = 9
SELECT COUNT(DISTINCT "title") FROM "table_203_501" WHERE "premiere date" = 9