Oracle-隨機數獲取

1、獲取10-100的數據，保留兩位小數

select trunc(dbms_random.value(10,100),2) from dual ;

2、獲取0-1的小數

 select dbms_random.value from dual ;

3、獲取隨機字母-3個

select dbms_random.string('x', 3) from dual ;

4、獲取隨機日期

select to_date(2454084+TRUNC(DBMS_RANDOM.VALUE(0,365)),'J') from dual ;

5、生成唯一字符串

 select sys_guid() from dual ;

 

應用舉例：

給某表的某些字段隨機產生測試數據

update AAA
set

zyl=trunc(dbms_random.value(10,100),2),
cl=trunc(dbms_random.value(10,100),2),
kccl=trunc(dbms_random.value(10,100),2),
jjkccl=trunc(dbms_random.value(10,100),2),
ncl=trunc(dbms_random.value(10,100),2),
lcl=trunc(dbms_random.value(10,100),2)