CREATE TABLE table_203_759 (id NUMBER, "year" NUMBER, "company" CLOB, "number of members affected" NUMBER, "duration of strike" CLOB, "notes" CLOB)

the company with the most days on strike
SELECT "company" FROM table_203_759 ORDER BY "duration of strike" DESC LIMIT 1
SELECT "company" FROM "table_203_759" ORDER BY "duration of strike" DESC FETCH FIRST 1 ROWS ONLY