CREATE TABLE table_204_633 (id NUMBER, "launch date" CLOB, "operator" CLOB, "name" CLOB, "sample origin" CLOB, "samples returned" CLOB, "recovery date" CLOB, "mission result" CLOB)

what year was the first success ?
SELECT MIN("launch date") FROM table_204_633 WHERE "mission result" = 'success'
SELECT MIN("launch date") FROM "table_204_633" WHERE "mission result" = 'success'