使用Emacs作为MySQL的客户端
1 配置.emacs (setq sql-mysql-options
1 配置.emacs
(setq sql-mysql-options '("-C" "-f" "-t" "-n")) ; for windows
(setq sql-user "root")
(setq sql-password "")
2 连接MySQL服务器
执行M-x sql-mysql / 在菜单中选择SQL->start SQLi session
根据提示输入用户,密码,mysql服务器地址,端口等信息。
emacs会新建一个名为*SQL*的buffer
3 连接sql文件与*SQL* buffer
打开sql文件并进入sql-mode
直接打开sql文件
或者
打开一个文件后再执行M-x sql-mode
设置产品类型为mysql
从带单中选择 SQL -> Product -> MySQL
或
执行M-x sql-set-product,然后输入mysql
连接sql文件与*SQL* buffer
使用菜单 SQL -> set SQLi buffer
或
执行命令M-x sql-set-sqli-buffer
然后输入想要连接的那个connection buffer,默认为*SQL* buffer
4 使用emacs作为mysql的客户端
4.1 在*SQL* Buffer中执行sql语句:
直接输入SQL语句,以“;”结尾,按下回车键自动执行
4.2 在sql文件buffer中执行sql语句
输入SQL语句,,按C-c C-c执行当前段落中的所有语句, 或者选择要执行的语句按下C-c C-b

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

AI Hentai Generator
Generate AI Hentai for free.

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



Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.

Using the database callback function in Golang can achieve: executing custom code after the specified database operation is completed. Add custom behavior through separate functions without writing additional code. Callback functions are available for insert, update, delete, and query operations. You must use the sql.Exec, sql.QueryRow, or sql.Query function to use the callback function.

This article will provide a detailed introduction to how to install and register a Bitcoin trading application. The Bitcoin trading app allows users to manage and trade cryptocurrencies such as Bitcoin. The article guides users through the installation and registration process step by step, including downloading applications, creating accounts, performing identity verification, and first deposit. The goal of the article is to provide beginners with clear and easy-to-understand guidelines to help them easily enter the world of Bitcoin trading.

JSON data can be saved into a MySQL database by using the gjson library or the json.Unmarshal function. The gjson library provides convenience methods to parse JSON fields, and the json.Unmarshal function requires a target type pointer to unmarshal JSON data. Both methods require preparing SQL statements and performing insert operations to persist the data into the database.

This article recommends the top ten digital currency trading apps in the world, including Binance, OKX, Huobi Global, Coinbase, Kraken, Gate.io, KuCoin, Bitfinex, Gemini and Bitstamp. These platforms have their own characteristics in terms of transaction pair quantity, transaction speed, security, compliance, user experience, etc. For example, Binance is known for its high transaction speed and extensive services, while Coinbase is more suitable for novices. Choosing a platform that suits you requires comprehensive consideration of your own needs and risk tolerance. Learn about the world's mainstream digital currency trading platforms to help you conduct digital asset trading safely and efficiently.

How to integrate GoWebSocket with a database: Set up a database connection: Use the database/sql package to connect to the database. Store WebSocket messages to the database: Use the INSERT statement to insert the message into the database. Retrieve WebSocket messages from the database: Use the SELECT statement to retrieve messages from the database.
