René's URL Explorer Experiment

Title: InterviewNotes/notes/MySQL.md at master · lineCode/InterviewNotes · GitHub

Open Graph Title: InterviewNotes/notes/MySQL.md at master · lineCode/InterviewNotes

X Title: InterviewNotes/notes/MySQL.md at master · lineCode/InterviewNotes

Description: :books: 计算机基础知识整理，持续更新中~. Contribute to lineCode/InterviewNotes development by creating an account on GitHub.

Open Graph Description: :books: 计算机基础知识整理，持续更新中~. Contribute to lineCode/InterviewNotes development by creating an account on GitHub.

X Description: :books: 计算机基础知识整理，持续更新中~. Contribute to lineCode/InterviewNotes development by creating an account on GitHub.

Opengraph URL: https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md

X: @github

direct link

Domain: github.com

route-pattern	/:user_id/:repository/blob/name(/path)
route-controller	blob
route-action	show
fetch-nonce	v2:821a9730-1a52-bc70-7d24-015950833fc6
current-catalog-service-hash	f3abb0cc802f3d7b95fc8762b94bdcb13bf39634c40c357301c4aa1d67a256fb
request-id	A426:3E6ECA:F9677:1515B6:6A55332E
html-safe-nonce	c59fb44c21ae5036ac02941479c5217b539eb435b11e998b3bd8737e09faebc2
visitor-payload	eyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJBNDI2OjNFNkVDQTpGOTY3NzoxNTE1QjY6NkE1NTMzMkUiLCJ2aXNpdG9yX2lkIjoiNDgxMDMxMjEzODYzOTA5NDU3NCIsInJlZ2lvbl9lZGdlIjoiaWFkIiwicmVnaW9uX3JlbmRlciI6ImlhZCJ9
visitor-hmac	a8caafcb08caffdf4e77972edd8143dc6faef68268399f01cb57bd9e7e9cfd4a
hovercard-subject-tag	repository:123055125
github-keyboard-shortcuts	repository,source-code,file-tree,copilot
google-site-verification	Apib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-url	https://collector.github.com/github/collect
analytics-location	///blob/show
fb:app_id	1401488693436528
apple-itunes-app	app-id=1477376905, app-argument=https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md
twitter:image	https://opengraph.githubassets.com/30a82342b86ac9daac5bb47f5d39d414da64886f8d61f3c577c7de26f0ed1551/lineCode/InterviewNotes
twitter:card	summary_large_image
og:image	https://opengraph.githubassets.com/30a82342b86ac9daac5bb47f5d39d414da64886f8d61f3c577c7de26f0ed1551/lineCode/InterviewNotes
og:image:alt	:books: 计算机基础知识整理，持续更新中~. Contribute to lineCode/InterviewNotes development by creating an account on GitHub.
og:image:width	1200
og:image:height	600
og:site_name	GitHub
og:type	object
hostname	github.com
expected-hostname	github.com
None	fbd8fce4d63ac394c5405faa20aa50d5c9e56b979ac43ee1b26f8e7c47c4cd89
turbo-cache-control	no-cache
go-import	github.com/lineCode/InterviewNotes git https://github.com/lineCode/InterviewNotes.git
octolytics-dimension-user_id	10693337
octolytics-dimension-user_login	lineCode
octolytics-dimension-repository_id	123055125
octolytics-dimension-repository_nwo	lineCode/InterviewNotes
octolytics-dimension-repository_public	true
octolytics-dimension-repository_is_fork	true
octolytics-dimension-repository_parent_id	121395510
octolytics-dimension-repository_parent_nwo	CyC2018/CS-Notes
octolytics-dimension-repository_network_root_id	121395510
octolytics-dimension-repository_network_root_nwo	CyC2018/CS-Notes
turbo-body-classes	logged-out env-production page-responsive
disable-turbo	false
browser-stats-url	https://api.github.com/_private/browser/stats
browser-errors-url	https://api.github.com/_private/browser/errors
release	cf96660b44878f418b09d3d6ecde00ad62332910
ui-target	full
theme-color	#1e2327
color-scheme	light dark

Links:

Skip to content	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#start-of-content
	https://github.com/
Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2FlineCode%2FInterviewNotes%2Fblob%2Fmaster%2Fnotes%2FMySQL.md
GitHub CopilotWrite better code with AI	https://github.com/features/copilot
GitHub Copilot appDirect agents from issue to merge	https://github.com/features/ai/github-app
MCP RegistryNewIntegrate external tools	https://github.com/mcp
ActionsAutomate any workflow	https://github.com/features/actions
CodespacesInstant dev environments	https://github.com/features/codespaces
IssuesPlan and track work	https://github.com/features/issues
Code ReviewManage code changes	https://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilities	https://github.com/security/advanced-security
Code securitySecure your code as you build	https://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they start	https://github.com/security/advanced-security/secret-protection
Why GitHub	https://github.com/why-github
Documentation	https://docs.github.com
Blog	https://github.blog
Changelog	https://github.blog/changelog
Marketplace	https://github.com/marketplace
View all features	https://github.com/features
Enterprises	https://github.com/enterprise
Small and medium teams	https://github.com/team
Startups	https://github.com/enterprise/startups
Nonprofits	https://github.com/solutions/industry/nonprofits
App Modernization	https://github.com/solutions/use-case/app-modernization
DevSecOps	https://github.com/solutions/use-case/devsecops
DevOps	https://github.com/solutions/use-case/devops
CI/CD	https://github.com/solutions/use-case/ci-cd
View all use cases	https://github.com/solutions/use-case
Healthcare	https://github.com/solutions/industry/healthcare
Financial services	https://github.com/solutions/industry/financial-services
Manufacturing	https://github.com/solutions/industry/manufacturing
Government	https://github.com/solutions/industry/government
View all industries	https://github.com/solutions/industry
View all solutions	https://github.com/solutions
AI	https://github.com/resources/articles?topic=ai
Software Development	https://github.com/resources/articles?topic=software-development
DevOps	https://github.com/resources/articles?topic=devops
Security	https://github.com/resources/articles?topic=security
View all topics	https://github.com/resources/articles
Customer stories	https://github.com/customer-stories
Events & webinars	https://github.com/resources/events
Ebooks & reports	https://github.com/resources/whitepapers
Business insights	https://github.com/solutions/executive-insights
GitHub Skills	https://skills.github.com
Documentation	https://docs.github.com
Customer support	https://support.github.com
Community forum	https://github.com/orgs/community/discussions
Trust center	https://github.com/trust-center
Partners	https://github.com/partners
View all resources	https://github.com/resources
GitHub SponsorsFund open source developers	https://github.com/open-source/sponsors
Security Lab	https://securitylab.github.com
Maintainer Community	https://maintainers.github.com
Accelerator	https://github.com/open-source/accelerator
GitHub Stars	https://stars.github.com
Archive Program	https://archiveprogram.github.com
Topics	https://github.com/topics
Trending	https://github.com/trending
Collections	https://github.com/collections
Enterprise platformAI-powered developer platform	https://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security features	https://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI features	https://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 support	https://github.com/enterprise/premium-support
Pricing	https://github.com/pricing
Search syntax tips	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentation	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2FlineCode%2FInterviewNotes%2Fblob%2Fmaster%2Fnotes%2FMySQL.md
Sign up	https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fblob%2Fshow&source=header-repo&source_repo=lineCode%2FInterviewNotes
Reload	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md
Reload	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md
Reload	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md
lineCode	https://github.com/lineCode
InterviewNotes	https://github.com/lineCode/InterviewNotes
CyC2018/CS-Notes	https://github.com/CyC2018/CS-Notes
Notifications	https://github.com/login?return_to=%2FlineCode%2FInterviewNotes
Fork 0	https://github.com/login?return_to=%2FlineCode%2FInterviewNotes
Star 0	https://github.com/login?return_to=%2FlineCode%2FInterviewNotes
Code	https://github.com/lineCode/InterviewNotes
Pull requests 0	https://github.com/lineCode/InterviewNotes/pulls
Actions	https://github.com/lineCode/InterviewNotes/actions
Projects	https://github.com/lineCode/InterviewNotes/projects
Wiki	https://github.com/lineCode/InterviewNotes/wiki
Security and quality 0	https://github.com/lineCode/InterviewNotes/security
Insights	https://github.com/lineCode/InterviewNotes/pulse
Code	https://github.com/lineCode/InterviewNotes
Pull requests	https://github.com/lineCode/InterviewNotes/pulls
Actions	https://github.com/lineCode/InterviewNotes/actions
Projects	https://github.com/lineCode/InterviewNotes/projects
Wiki	https://github.com/lineCode/InterviewNotes/wiki
Security and quality	https://github.com/lineCode/InterviewNotes/security
Insights	https://github.com/lineCode/InterviewNotes/pulse
	https://github.com/lineCode/InterviewNotes
InterviewNotes	https://github.com/lineCode/InterviewNotes/tree/master
notes	https://github.com/lineCode/InterviewNotes/tree/master/notes
History	https://github.com/lineCode/InterviewNotes/commits/master/notes/MySQL.md
	https://github.com/lineCode/InterviewNotes/commits/master/notes/MySQL.md
InterviewNotes	https://github.com/lineCode/InterviewNotes/tree/master
notes	https://github.com/lineCode/InterviewNotes/tree/master/notes
Raw	https://github.com/lineCode/InterviewNotes/raw/refs/heads/master/notes/MySQL.md
存储引擎	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#%E5%AD%98%E5%82%A8%E5%BC%95%E6%93%8E
1. InnoDB	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-innodb
2. MyISAM	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-myisam
3. InnoDB 与 MyISAM 的比较	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#3-innodb-%E4%B8%8E-myisam-%E7%9A%84%E6%AF%94%E8%BE%83
数据类型	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B
1. 整型	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-%E6%95%B4%E5%9E%8B
2. 浮点数	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-%E6%B5%AE%E7%82%B9%E6%95%B0
3. 字符串	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#3-%E5%AD%97%E7%AC%A6%E4%B8%B2
4. 时间和日期	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#4-%E6%97%B6%E9%97%B4%E5%92%8C%E6%97%A5%E6%9C%9F
索引	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#%E7%B4%A2%E5%BC%95
1. 索引分类	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-%E7%B4%A2%E5%BC%95%E5%88%86%E7%B1%BB
1.1 B-Tree 索引	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#11-b-tree-%E7%B4%A2%E5%BC%95
1.2 哈希索引	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#12-%E5%93%88%E5%B8%8C%E7%B4%A2%E5%BC%95
1.3. 空间索引数据（R-Tree）	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#13-%E7%A9%BA%E9%97%B4%E7%B4%A2%E5%BC%95%E6%95%B0%E6%8D%AEr-tree
1.4 全文索引	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#14-%E5%85%A8%E6%96%87%E7%B4%A2%E5%BC%95
2. 索引的优点	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-%E7%B4%A2%E5%BC%95%E7%9A%84%E4%BC%98%E7%82%B9
3. 索引优化	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#3-%E7%B4%A2%E5%BC%95%E4%BC%98%E5%8C%96
3.1 独立的列	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#31-%E7%8B%AC%E7%AB%8B%E7%9A%84%E5%88%97
3.2 前缀索引	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#32-%E5%89%8D%E7%BC%80%E7%B4%A2%E5%BC%95
3.3 多列索引	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#33-%E5%A4%9A%E5%88%97%E7%B4%A2%E5%BC%95
3.4 索引列的顺序	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#34-%E7%B4%A2%E5%BC%95%E5%88%97%E7%9A%84%E9%A1%BA%E5%BA%8F
3.5 聚簇索引	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#35-%E8%81%9A%E7%B0%87%E7%B4%A2%E5%BC%95
3.6 覆盖索引	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#36-%E8%A6%86%E7%9B%96%E7%B4%A2%E5%BC%95
4. B-Tree 和 B+Tree 原理	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#4-b-tree-%E5%92%8C-b+tree-%E5%8E%9F%E7%90%86
4. 1 B-Tree	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#4-1-b-tree
4.2 B+Tree	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#42-b+tree
4.3 带有顺序访问指针的 B+Tree	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#43-%E5%B8%A6%E6%9C%89%E9%A1%BA%E5%BA%8F%E8%AE%BF%E9%97%AE%E6%8C%87%E9%92%88%E7%9A%84-b+tree
4.4 为什么使用 B-Tree 和 B+Tree	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#44-%E4%B8%BA%E4%BB%80%E4%B9%88%E4%BD%BF%E7%94%A8-b-tree-%E5%92%8C-b+tree
查询性能优化	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#%E6%9F%A5%E8%AF%A2%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96
1. Explain	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-explain
2. 减少返回的列	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-%E5%87%8F%E5%B0%91%E8%BF%94%E5%9B%9E%E7%9A%84%E5%88%97
3. 减少返回的行	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#3-%E5%87%8F%E5%B0%91%E8%BF%94%E5%9B%9E%E7%9A%84%E8%A1%8C
4. 拆分大的 DELETE 或 INSERT 语句	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#4-%E6%8B%86%E5%88%86%E5%A4%A7%E7%9A%84-delete-%E6%88%96-insert-%E8%AF%AD%E5%8F%A5
分库与分表	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#%E5%88%86%E5%BA%93%E4%B8%8E%E5%88%86%E8%A1%A8
故障转移和故障恢复	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#%E6%95%85%E9%9A%9C%E8%BD%AC%E7%A7%BB%E5%92%8C%E6%95%85%E9%9A%9C%E6%81%A2%E5%A4%8D
1. 故障转移	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-%E6%95%85%E9%9A%9C%E8%BD%AC%E7%A7%BB
2. 故障恢复	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-%E6%95%85%E9%9A%9C%E6%81%A2%E5%A4%8D
参考资料	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#存储引擎
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-innodb
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-myisam
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#3-innodb-与-myisam-的比较
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#数据类型
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-整型
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-浮点数
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#3-字符串
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#4-时间和日期
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#索引
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-索引分类
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#11-b-tree-索引
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#12-哈希索引
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#13-空间索引数据r-tree
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#14-全文索引
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-索引的优点
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#3-索引优化
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#31-独立的列
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#32-前缀索引
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#33-多列索引
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#34-索引列的顺序
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#35-聚簇索引
	https://github.com/CyC2018/InterviewNotes/blob/master/pics/b9e9ae8c-e216-4c01-b267-a50dbeb98fa4.jpg
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#36-覆盖索引
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#4-b-tree-和-btree-原理
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#4-1-b-tree
	https://github.com/CyC2018/InterviewNotes/blob/master/pics/5ed71283-a070-4b21-85ae-f2cbfd6ba6e1.jpg
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#42-btree
	https://github.com/CyC2018/InterviewNotes/blob/master/pics/63cd5b50-d6d8-4df6-8912-ef4a1dd5ba13.jpg
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#43-带有顺序访问指针的-btree
	https://github.com/CyC2018/InterviewNotes/blob/master/pics/1ee5f0a5-b8df-43b9-95ab-c516c54ec797.jpg
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#44-为什么使用-b-tree-和-btree
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#查询性能优化
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-explain
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-减少返回的列
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#3-减少返回的行
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#4-拆分大的-delete-或-insert-语句
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#分库与分表
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#故障转移和故障恢复
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#1-故障转移
	https://github.com/CyC2018/InterviewNotes/blob/master/pics/fabd5fa0-b75e-48d0-9e2c-31471945ceb9.jpg
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#2-故障恢复
	https://github.com/lineCode/InterviewNotes/blob/master/notes/MySQL.md#参考资料
MySQL 索引背后的数据结构及算法原理	http://blog.codinglabs.org/articles/theory-of-mysql-index.html
MySQL 索引优化全攻略	http://www.runoob.com/w3cnote/mysql-index.html
20+ 条 MySQL 性能优化的最佳经验	https://www.jfox.info/20-tiao-mysql-xing-nen-you-hua-de-zui-jia-jing-yan.html
	https://github.com
Terms	https://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacy	https://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Security	https://github.com/security
Status	https://www.githubstatus.com/
Community	https://github.community/
Docs	https://docs.github.com/
Contact	https://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.