CREATE TABLE table_449 ("Character ( s ) " TEXT, "First Appearance" TEXT, "Cover Date" TEXT, "Publisher" TEXT, "Estimated Value" TEXT)

what's the cover date where character(s) is sandman (wesley dodds)
SELECT "Cover Date" FROM table_449 WHERE "Character(s)" = 'Sandman (Wesley Dodds)'
SELECT "Cover Date" FROM "table_449" WHERE "Character(s)" = 'Sandman (Wesley Dodds)'