CREATE TABLE table_46342 ("Title" TEXT, "Release date" TEXT, "Format" TEXT, "Code" TEXT, "UK Singles Chart" TEXT, "US Modern Rock" TEXT, "Album" TEXT)

What is the format of code 9 40231-2 (us only)?
SELECT "Format" FROM table_46342 WHERE "Code" = '9 40231-2 (us only)'
SELECT "Format" FROM "table_46342" WHERE "Code" = '9 40231-2 (us only)'