search
HomeBackend DevelopmentPHP TutorialPHP用MYSQL做数据库时,内容字段到底有没必要分表呢?

比如有一个表里有个 id name content
那这个content我有没必要 经过一些处理
分散到10个表里去?

想知道如果分表 在多少量级别数量下 对比 才会有效率提升 或者根本没必要? 


回复讨论(解决方案)

这个也不好说,以我个人的经验我会在其他10个表加这个表的id而不是content,一般情况id跟content相比占用的空间小些。
还有一点就是:id一般是唯一标示

主表 id name 
分表有十个
id aid content 这里边的aid对应主表里的id 我是这种想法

没有必要!
即使是要分表,也不是你的这种分法

没必要把 如果要读取的话 还要到10个表里读取出来再拼?

没必要把 如果要读取的话 还要到10个表里读取出来再拼?



不是 是固定的 
文章表是 content  : id cid title
栏目表是 channel: id cid name
然后不同栏目对应不同的 分表 比如 contet01 content02 content03 字段是 id aid content

比如 我要找文章ID为2 的 内容
那需要先找到,ID为2属于栏目几,比如ID为2的文章 属于栏目3
栏目3对应 的内容表是  content03

那程序就直接从 content03 中找 aid = 2 的 content字段值 

那程序就直接从 content03 中找 aid = 2 的 content字段值 ????
这可能吗?

那程序就直接从 content03 中找 aid = 2 的 content字段值 ????
这可能吗?



不是 程序如果要找aid=2的 内容,首先在 aid=2的 文章表中 找到 对应的栏目ID 比如是栏目3
然后 栏目3中,有设定,所有归于栏目3的内容 都在 content03表里

然后,程序就去03表里找aid=2的 content值 并输出啦  

中间是由栏目表做指定中转的 

不是自找麻烦吗?

不是自找麻烦吗?



以前我在用ASP的一款CMS时 它是这样设计的 用的是access数据库 分表 以让数据多时 可以效率高一些

但我不知道mysql里这样分的话 到底有没意义了 所以这里问下大家啊

分表也不是你说的那种分法,如果有1千个栏目,岂不是要加1千个表?

完全没有必要把文章分表和栏目表弄在一起。
如果文章要分表,可以使用文章id来分表。
例如文章的id%10 会得到 0,1,2,3,4,5,6,7,8,9,这几个就是分表的表名。
可以根据id来判断内容在哪个分表。

例如要找id=2的文章内容。可以用$id%10 得出 2,然后直接在content02中读取内容。

没有必要!
即使是要分表,也不是你的这种分法



有必要这样做吗?
文章
id  title 描述 (原谅我英语不好,想不起来了)
内容
id  content  
有必要分开吗?    char  int  等一些是定长的字段 和 nvarchar  text 等自动分表?
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
The Continued Use of PHP: Reasons for Its EnduranceThe Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python: Exploring Their Similarities and DifferencesPHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

PHP and Python are both high-level programming languages ​​that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP and Python: Different Paradigms ExplainedPHP and Python: Different Paradigms ExplainedApr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP and Python: A Deep Dive into Their HistoryPHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

Choosing Between PHP and Python: A GuideChoosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Frameworks: Modernizing the LanguagePHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHP's Impact: Web Development and BeyondPHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values ​​and handle functions that may return null values.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Tools

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use