Due to the needs of the work project, I needed a city and county data table. I searched online and found that it was basically incomplete, so I spent 3 days sorting it out. The province, city and county data source is Google Maps. (Including 34 provinces, 371 cities, 2824 counties and districts) The code is as follows: /**********Create provincial table*************/ CREATE TABLE T_Province (ProID INT IDENTITY(1,1) PRIMARY KEY, --Province primary key ProName NVARCHAR(50) NOT NULL, --Province name ProSort INT, --Province sort ProRemark NVARCHAR(50) --Description) Go code is as follows: /********Create city-level table*******/ CREATE TABLE T_City (CityID INT ID
1. Recommended 6 articles about counties and districts
##Introduction: Due to the needs of the work project, we need a city and county data table. I searched online and found that it was basically incomplete, so I spent 3 days sorting it out. The province, city and county data source is Google Maps. (Including 34 Province, 371 cities, 2824 counties) The code is as follows: /**********Create provincial table*************/ CREATE TABLE T_Province (ProID INT IDENTITY(1,1) PRIMARY KEY,...
2. 4 recommended articles about hwSlider
3.
Recommended 6 articles about plug-in encapsulation
##4.
5 recommended articles about introduction and configuration##Introduction: The previous article "In-depth introduction to Mybatis series (5)---Introduction and configuration of TypeHandler (mybatis source code)" took a brief look at TypeHandler. This time I will end the discussion. Learning the configuration file of mybatis, this time involves the configuration of the remaining nodes that are not mentioned: objectFactory, databaseIdProvider, plugins, and mappers. So, next, let’s briefly introduce the functions of these configurations: 1. objectF...
5. Recommended articles about the installation and use of PhpStorm
Introduction: When I started learning PHP, the tool code editor I chose was PhpStorm, version 10.0.1. The first step is to install PhpStorm, license server activation method (license server). It is easy to find the website address, or IP address, on Baidu. Here are a few. The timeliness is not guaranteed. If it fails on Baidu, it should not be difficult to find it. http://idea.imsxm.comhttp://114.215.133.70:41017http://172.245.22.235:...
6. Articles about filter Recommended 10 articles
简介:验证消息的真实性在MVC Controller所在项目中添加过滤器,在过滤器中重写public override void OnActionExecuting(ActionExecutingContext filterContext)方法新建数据模型注:服务器接收消息时,不再是signature而是msg_signature微信服务器推送消息到服务器的HTTP请求报文示例POST /cgi-bin...
简介:这篇文章主要介绍了微信小程序 form组件详解的相关资料,需要的朋友可以参考下表单:将组件内的用户输入的
简介:我们还需要完成一些事情,才能搞定这个方法。目前,我们已经实现了触控手势和鼠标拖拽。function addSlide(element, options) { // Validate arguments... // Resolve&a
简介:Python版本管理:pyenv和pyenv-virtualenvScrapy爬虫入门教程一 安装和基本使用Scrapy爬虫入门教程二 官方提供DemoScrapy爬虫入门教程三 命令行工具介绍和示例Scrapy爬虫入门教程四 Spider(爬虫)Scrapy爬虫入门教程五 Selectors(选择器)Scrapy爬虫入门教程六 Items(项目)Scrapy爬虫入门教程七 Item Loader...
10. 关于WeUI的10篇文章推荐
简介:什么是WeUI?WeUI是在遵守微信视觉设计规范下,由官方设计团队为小程序量身定制的基础样式库。这里把WeUI放到基础篇里,是因为WeUI是官方出品,并且在10月28号IDE更新后,IDE不能识别和引用css,同时也屏蔽了从网络获取样式文件,和css划清界限。》》》 如何引入WeUI下载WeUIweui.wxss注意是在【weui-wxss/dist/style/】目录下,不要【weui-wxss...
【相关问答推荐】:
java - Cannot resolve symbol ‘HttpServletRequest'
javascript - video标签在微信中无法正常发使用,什么情况
angular.js - AngularJS配置了$locationProvider.html5Mode 返回上一页直接输出JSON
javascript - angular 如何在脱离服务器环境下,把不同的html加载到,以切换视图呢?
angular.js - angular JS里面用angular.injector获取的服务应该是哪些服务呢?是官方文档里面的service吗?
The above is the detailed content of How to use IDE? Summary of IDE example usage. For more information, please follow other related articles on the PHP Chinese website!

InnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Atom editor mac version download
The most popular open source editor

SublimeText3 Linux new version
SublimeText3 Linux latest version

SublimeText3 Mac version
God-level code editing software (SublimeText3)

SublimeText3 English version
Recommended: Win version, supports code prompts!

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.