for h in 0..24
loop
for m in 0..59
loop
if m > 51 then
-- 怎样跳出内层循环?
else
--.....
end if;
end loop;
end loop;
loop
for m in 0..59
loop
if m > 51 then
-- 怎样跳出内层循环?
else
--.....
end if;
end loop;
end loop;
调试欢乐多
LOOP
-- some computations
IF count > 0 THEN
EXIT; -- exit loop
END IF;
END LOOP;