《高性能MySQL》读书笔记-mysql数据类型和应用

Others 2021-12-11 21:38:47 views: null

这篇文章主要介绍下现实中的数据和msyql里面的存储的类型，例如ip地址要怎么存储，时间要怎么存储，字符串要怎么存储。

名词解释：
宽表：也是就是列很多的表

数据类型

一个是指现实中的数据类型
另一个是指MySQL用来存储的数据类型，大的数据类型，例如数字，字符串，时间等，还有就是具体的数据类型，例如数字里面的INT,FLOAT,DOUBLE,DECIMAL等等

用什么数据类型来存储哪些数据？

用什么类型来存储ip地址？
在这里插入图片描述
用什么类型存储时间？
DATETIME
TIMESTAMP

Guess you like

Origin blog.csdn.net/lineuman/article/details/117185352
Recommended
Ranking
Empire cms smart tag calls four first-level recommended articles, starting from the fourth article
Linux environment installation and configuration Elasticsearch7.17
Big Data processing architecture and Lambda Kappa architecture
Explore the top of the AI large model platform - Wenxin Qianfan
Beijing car PK10 lucky airship Guanya size and value of the odd and even tips
W3B x Sui Hacker House｜In-depth understanding of Sui and Move language
Know almost Ko Chan: Chinese what any decent open source software products? (Finishing from my original answer)
Comprehensively improve AD domain security authentication | Zhuyun IDaaS
Android Update Engine Analysis (24) What happened when making the downgrade package?
Spark Architecture and Operating Mechanism (1) - System Architecture
Daily
More
2024-05-07(34)
2024-05-06(6)
2024-05-05(0)
2024-05-04(18)
2024-05-03(8)
2024-05-02(0)
2024-05-01(4)
2024-04-30(36)
2024-04-29(5)
2024-04-28(12)

Code World

© 2018 codetd.com