MySQL指令_MySQL
启动mysql服务
1、如果你已经安装了MySQLStartupItem.pkg,重新启动电脑即可。
2、如果你有安装MySQLStartupItem.pkg或者不想启动电脑,运行:应用程序-实用工具-终端,在终端中输入命令:sudo /Library/StartupItems/MySQLCOM/MySQLCOM start,然后输入你的系统管理员密码即可。
关闭mysql服务
终端中输入命令:sudo /Library/StartupItems/MySQLCOM/MySQLCOM stop,然后输入你的系统管理员密码即可。
你也可以去系统偏好设置-其他-MySQL,通过这个来启动和停止MySQL服务。
更改mysql root账户密码
终端中输入命令:/usr/local/mysql/bin/mysqladmin -u root password 新密码
你可以随时使用这条命令更改你的密码。
终端登录mysql
终端登录mysql
方法1:绝对路径
终端中输入命令:/usr/local/mysql/bin/mysql -u root -p
提示:输入你的新密码
方法2:(推荐)相对路径
终端中输入命令:
查看路径中有没有需要的路径:
终端中输入命令:echo $PATH
没有,继续
添加需要路径:PATH="$PATH":/usr/local/mysql/bin
以后
终端中需输入命令:mysql -u root -p 即可

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



InnoDB's full-text search capabilities are very powerful, which can significantly improve database query efficiency and ability to process large amounts of text data. 1) InnoDB implements full-text search through inverted indexing, supporting basic and advanced search queries. 2) Use MATCH and AGAINST keywords to search, support Boolean mode and phrase search. 3) Optimization methods include using word segmentation technology, periodic rebuilding of indexes and adjusting cache size to improve performance and accuracy.

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

Full table scanning may be faster in MySQL than using indexes. Specific cases include: 1) the data volume is small; 2) when the query returns a large amount of data; 3) when the index column is not highly selective; 4) when the complex query. By analyzing query plans, optimizing indexes, avoiding over-index and regularly maintaining tables, you can make the best choices in practical applications.

Yes, MySQL can be installed on Windows 7, and although Microsoft has stopped supporting Windows 7, MySQL is still compatible with it. However, the following points should be noted during the installation process: Download the MySQL installer for Windows. Select the appropriate version of MySQL (community or enterprise). Select the appropriate installation directory and character set during the installation process. Set the root user password and keep it properly. Connect to the database for testing. Note the compatibility and security issues on Windows 7, and it is recommended to upgrade to a supported operating system.

The difference between clustered index and non-clustered index is: 1. Clustered index stores data rows in the index structure, which is suitable for querying by primary key and range. 2. The non-clustered index stores index key values and pointers to data rows, and is suitable for non-primary key column queries.

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

Article discusses strategies for handling large datasets in MySQL, including partitioning, sharding, indexing, and query optimization.

The article discusses dropping tables in MySQL using the DROP TABLE statement, emphasizing precautions and risks. It highlights that the action is irreversible without backups, detailing recovery methods and potential production environment hazards.
