CREATE TABLE table_203_173 (id NUMBER, "year ( s ) " CLOB, "serial name" CLOB, "role" CLOB, "co-star" CLOB, "note ( s ) " CLOB, "channel" CLOB)

which show ran the longest ?
SELECT "serial name" FROM table_203_173 ORDER BY "year(s)" - "year(s)" DESC LIMIT 1
SELECT "serial name" FROM "table_203_173" ORDER BY "year(s)" - "year(s)" DESC FETCH FIRST 1 ROWS ONLY