CREATE TABLE table_203_528 (id NUMBER, "year" NUMBER, "political rights" NUMBER, "civil liberties" NUMBER, "status" CLOB, "president" CLOB)

who ruled longer , ali saibou or mamadou tandja ?
SELECT "president" FROM table_203_528 WHERE "president" IN ('ali saibou', 'mamadou tandja') GROUP BY "president" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "president" FROM "table_203_528" WHERE "president" IN ('ali saibou', 'mamadou tandja') GROUP BY "president" ORDER BY COUNT(*) DESC FETCH FIRST 1 ROWS ONLY