例:
select * from (select * from table order by dbms_random.value) where rownum< n;还可以利用它获取随机数:
例:
select trunc(dbms_random.value(0, 1000)) from dual;
select * from (select * from table order by dbms_random.value) where rownum< n;还可以利用它获取随机数:
select trunc(dbms_random.value(0, 1000)) from dual;