char,varchar和nvarchar之间的区别 [英] Difference among char, varchar and nvarchar
本文介绍了char,varchar和nvarchar之间的区别的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
char,varchar和nvarchar之间有什么区别。哪一个节省内存?请解释一下。
解决方案
访问此链接,您将得到确切的想法。!
http://www.orafaq.com/faq/what_is_the_difference_between_varchar_varchar2_and_char_data_types [ ^ ]
根据内存结构:http://docs.oracle.com/cd/E11882_01/appdev.112/e25519/datatypes.htm [ ^ ]
< blockquote>访问这里..
HTTP:// www.orafaq.com/faq/what_is_the_difference_between_varchar_varchar2_and_char_data_types [ ^ ]
或
http://www.aspdotnet-suresh.com/2012/07/差异-char-varchar-and.html [ ^ ]
What is the difference among char, varchar and nvarchar. Which one saves memory? Please explain me.
解决方案
Visit this link and you will get exact idea.!
http://www.orafaq.com/faq/what_is_the_difference_between_varchar_varchar2_and_char_data_types[^]
According to Memory Structure : http://docs.oracle.com/cd/E11882_01/appdev.112/e25519/datatypes.htm[^]
visit here..
http://www.orafaq.com/faq/what_is_the_difference_between_varchar_varchar2_and_char_data_types[^]
or
http://www.aspdotnet-suresh.com/2012/07/difference-between-char-varchar-and.html[^]
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