oracle dbms_random
2021/5/12 19:27:53
本文主要是介绍oracle dbms_random,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
1.dbms_random.random
return equal to -power(2,31) and less than power(2,31)
SQL> select abs(dbms_random.random ) from dual; ABS(DBMS_RANDOM.RANDOM) ----------------------- 1149033468
2.DBMS_RANDOM.VALUE(low IN NUMBER,high IN NUMBER)
SQL> select round(dbms_random.value(1,500) ) from dual; ROUND(DBMS_RANDOM.VALUE(1,500)) ------------------------------- 227
3.DBMS_RANDOM.STRING
STRING : This function gets a random string.
DBMS_RANDOM.STRING
opt IN CHAR,
len IN NUMBER)
RETURN VARCHAR2;
'u', 'U' - returning string in uppercase alpha characters
'l', 'L' - returning string in lowercase alpha characters
'a', 'A' - returning string in mixed case alpha characters
'x', 'X' - returning string in uppercase alpha-numeric characters
'p', 'P' - returning string in any printable characters.
SQL> select dbms_random.STRING('L',15) from dual; DBMS_RANDOM.STRING('L',15) -------------------------------------------------------------------------------- vonhtvmqqychsvf SQL> select dbms_random.STRING('U',10) from dual; DBMS_RANDOM.STRING('U',10) -------------------------------------------------------------------------------- OUGJGUXJSU SQL> select dbms_random.STRING('A',10) from dual; DBMS_RANDOM.STRING('A',10) -------------------------------------------------------------------------------- IMAkRtkbka SQL> select dbms_random.STRING('X',20) from dual; DBMS_RANDOM.STRING('X',20) -------------------------------------------------------------------------------- RBENBEDHO83X43U0WUOW SQL> select dbms_random.STRING('P',20) from dual 2 ; DBMS_RANDOM.STRING('P',20) -------------------------------------------------------------------------------- Ycg>H.A@.[X%"5rr4\rv
这篇关于oracle dbms_random的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!
- 2024-06-06Package Easy(基于 NSIS 的打包exe安装包工具)使用方法-icode9专业技术文章分享
- 2024-06-06基于 casdoor 的 ELK 开源登录认证解决方案: elk-auth-casdoor-icode9专业技术文章分享
- 2024-05-29Elasticsearch慢查询日志配置
- 2024-05-29揭秘华为如此多成功项目的产品关键——Charter模板
- 2024-05-29海外IDC业务拓展的7大挑战
- 2024-05-29InLine Chat功能优化对标Github Copilot,CodeGeeX带来更高效、更直观的编程体验!
- 2024-05-29CodeGeeX 智能编程助手 6 项功能升级,在Visual Studio插件市场霸榜2周!
- 2024-05-29AutoMQ 生态集成 Apache Doris
- 2024-05-292024年IDC行业的深度挖掘:机遇、挑战与未来展望
- 2024-05-29五款扩展组件齐发 —— Volcano、Keda、Crane-scheduler 等,邀你体验