下面我来给大家总结一下关于MYSQL错误#145各种解决办法总结,有碰到MYSQL错误#145错误的朋友可参考参考。
Mysql有的时候因为掉电或者其他原因导致数据库损坏,错信息如下:
MySql: Can't open file: 'sdb_sessions.MYI'. (errno: 145)
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我们可以使用mysql自带的mysqlcheck命令来快速修复所有的数据库或者特定的数据
如果你的数据库主机就你一个人用,并且你还能控制的话,建议你用Mysql自带的修复工具myisamchk.exe进行修复,操作如下:
修复前将mysql服务停止。
如果是Win主机,打开命令行方式,然后进入到mysql的/bin目录。
执行myisamchk -r 数据库所在路径*.MYI
如果是类Unix主机,直接使用myisamchk -r 数据库目录*.MYI
使用命令myisamchk修复数据库的MYI文件即可
代码如下 | 复制代码 |
# /usr/local/mysql5/bin/myisamchk -c -r /bak/lib/mysql/yourealcn/biz_user.* myisamchk: error: ‘/bak/lib/mysql/yourealcn/biz_user.frm’ is not a ——— myisamchk: error: ‘/bak/lib/mysql/yourealcn/biz_user.MYD’ is not a ——— - recovering (with sort) MyISAM-table ‘/bak/lib/mysql/yourealcn/biz_user.MYI’ Data records: 20414 |
其实还有一个简单的方法打开你的myphpadmin,选中Can’t open file:后面同名的表,有个下拉菜单“选中项”,选择“修复”
1. 进入管理mysql的phpmyadmin
2. 在左则选中自己的数据库
3. 在右则勾选中错误信息中的那个’xxx’表
4.
滚动屏幕到下面,有个下拉菜单(With selected:),选择”Repair table”
修改之后,并没有发现有什么数据损失,连忙备份了一份数据库到邮件里面,备份还是很重要的

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


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