Oracle character set
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了Oracle character set,小编现在分享给大家,供广大互联网技能从业者学习和参考。文章包含1725字,纯文字阅读大概需要3分钟。
内容图文
![Oracle character set](/upload/InfoBanner/zyjiaocheng/525/71cb1705ab444de09e4a0a9feb70c703.jpg)
Based on Oracle, processing an English character takes 1 byte, but 3 bytes for a Chinese character.
For example:
select ename, length(ename), lengthb(ename), empno, length(empno),lengthb(empno)
from emp001;
ENAME LENGTH(ENAME) LENGTHB(ENAME) EMPNO LENGTH(EMPNO) LENGTHB(EMPNO)
-------------------- ------------- -------------- ---------- ------------- --------------
郭靖 2 6 100 3 3
黄蓉 2 6 200 3 3
裘千尺 3 9 300 3 3
洪七公 3 9 400 3 3
杨过 2 6 600 3 3
梅超风 3 9 500 3 3
From storage point view, deciding to use Chinese characters in the table values would cost 3 times more space
usage than its English counterpart. How much impact would have on the database performance
when the data activity on a table, such as insert and update data, is increased?
Can we compare apple and orange in this case?
It seems that to process Asia language, like Chinese, Japanese, and Korean, the character set in database system
will cost more than in English. And perhaps we can‘t comapre apple and orange in this case after all.
Oracle character set
标签:rman sele bsp compare ike sel sed orm date
本文系统来源:https://www.cnblogs.com/zwang562020/p/13199262.html
内容总结
以上是互联网集市为您收集整理的Oracle character set全部内容,希望文章能够帮你解决Oracle character set所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错,欢迎将互联网集市网站推荐给程序员好友。
内容备注
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 gblab@vip.qq.com 举报,一经查实,本站将立刻删除。
内容手机端
扫描二维码推送至手机访问。