Basic commands for MySQL databases and tables
[Introduction] Do you have a headache in obtaining the actual operation of the most basic commands for MySQL databases and tables? If this is the case, the following article will give you the corresponding solution. The following article mainly introduces the solution to obtain the most basic commands about MySQL database and tables. The following is the relevant content
Are you right? Are you having a headache getting the actual operation of the most basic commands for MySQL databases and tables? If this is the case, the following article will give you the corresponding solution. The following article mainly introduces the solution for obtaining the most basic commands about MySQL database and tables. The following is a detailed description of the relevant content.
SELECT DATABASE(); List the currently selected database, if no database is selected, NULL will be displayed;
SHOW DATABASES; List the MySQL currently existing on the server Database;
USE databasename; Select to access a database;
SHOW tables; Find out what tables the current MySQL database contains;
DESCRIBE tablename; List a table Structure;
SHOW INDEX FROM tablename; Displays index information in the table.
The above related content is an introduction to some of the most basic commands for MySQL databases and tables. I hope you can gain something.
The above is the detailed content of Basic commands for MySQL databases and tables. For more information, please follow other related articles on the PHP Chinese website!

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

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

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

Hot Topics

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

DeepSeekAI Tool User Guide and FAQ DeepSeek is a powerful AI intelligent tool. This article will answer some common usage questions to help you get started quickly. FAQ: The difference between different access methods: There is no difference in function between web version, App version and API calls, and App is just a wrapper for web version. The local deployment uses a distillation model, which is slightly inferior to the full version of DeepSeek-R1, but the 32-bit model theoretically has 90% full version capability. What is a tavern? SillyTavern is a front-end interface that requires calling the AI model through API or Ollama. What is breaking limit
