oracle之隨機數

一、首先創建一個測試表

select * from DIM_IA_TEST1

生成隨機數

select t.*,rownum rn from  (select * from DIM_IA_TEST1 order by dbms_random.value())t;

隨機取5條

select t.*,rownum rn from  (select * from DIM_IA_TEST1 order by dbms_random.value())t where rownum<=5;

二、生成一個特定范圍的隨機數

以生成30~70范圍隨機數為例：

select dbms_random.value(30,70) from dual;