CREATE TABLE table_204_161 (id NUMBER, "name" CLOB, "1968 cf\ designator" CLOB, "place of\ manufacture" CLOB, "primary\ role ( s ) " CLOB, "service\ period" CLOB, "#\ used" NUMBER)

how long was the canadair sabre in service ?
SELECT "service\nperiod" - "service\nperiod" FROM table_204_161 WHERE "name" = 'canadair sabre'
SELECT "service\nperiod" - "service\nperiod" FROM "table_204_161" WHERE "name" = 'canadair sabre'