search
HomeDatabaseMysql Tutorialmysql数据库 for ubuntu

mysql数据库 for ubuntu

Jun 07, 2016 pm 03:34 PM
formysqlubuntuBasedatabase

本文将从基础出发,介绍Mysql在Linux环境下的安装和基本使用命令,仅适用于Mysql初学者。 安装Mysql数据库 这里介绍最最简单的安装方式,至于编译安装,可以下载安装包, ./configure 生成Makefile,然后 make clean, make , make test, make install 我想这

本文将从基础出发,介绍Mysql在Linux环境下的安装和基本使用命令,仅适用于Mysql初学者。

安装Mysql数据库

这里介绍最最简单的安装方式,至于编译安装,可以下载安装包, ./configure 生成Makefile,然后 make clean, make , make test, make install 我想这些命令应该很基本了吧,这里不再敖述。

1. 安装命令

king@king-desktop:~$ sudo apt-get install mysql-server mysql-client

2. 查看数据库版本,这里密码为“11”

king@king-desktop:~$ sudo mysqladmin -u root -p version
Enter password: 
mysqladmin  Ver 8.42 Distrib 5.1.70, for debian-linux-gnu on i486
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

3. 查看Mysql服务状态,启动或者关闭Mysql服务

king@king-desktop:~$ service mysql status
mysql start/running, process 899

king@king-desktop:~$ sudo /etc/init.d/mysql start|stop|restart

4. 登陆数据库,并退出操作

命令里的 -u 指的是用户名, 这里指的是 root, -p 后接密码, 这里指安装数据库时候设置的密码,笔者的为11

king@king-desktop:~$ sudo mysql -uroot -p11

5. 数据库内的基本操作

//  显示数据库
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| jxc                |
| mysql              |
+--------------------+
3 rows in set (0.08 sec)

// 使用某个数据库
mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed

// 创建数据库
mysql> create database thinkphp;
Query OK, 1 row affected (0.00 sec)

// 删除数据库
mysql> drop database thinkphp;
Query OK, 0 rows affected (0.07 sec)

// 显示数据库中的某张表
mysql> show tables;

// 显示某个表的结构
mysql> describe slow_log;

// 选择显示的表内容
mysql> select * from slow_log;
Empty set (0.00 sec)

// 删除表
mysql> drop table slow_log;

// 导入数据库
mysql> source /var/www/webPage.sql;
或者命令: ~$ sudo mysql –uroot –p11 thinktest 
<h3 id="mysql-表结构AUD操作">mysql 表结构AUD操作</h3>
<pre class="brush:php;toolbar:false">添加表字段
   alter table tablename add elemName varchar(10) not null;
修改某个表字段类型
   alter table tablename change elemName elemNewName varchar(10) null;
   alter table tablename modify elemName varchar(10) null;
删除某个字段
   alter table tablename drop elemName;

向数据表中插入数据
   insert into tablename (elem1,elem2,...) values (A,B,...);

删除数据表中数据
   delete from tablename where id>1 order by time limit 1;

更新数据表中数据
   UPDATE tablename SET elem1=1, elem2=2 WHERE id=1; 
【本文来自 www.it892.comhttp://www.it892.com/content/system/Ubuntu/2014/0802/5479.html
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
How do you handle database upgrades in MySQL?How do you handle database upgrades in MySQL?Apr 30, 2025 am 12:28 AM

The steps for upgrading MySQL database include: 1. Backup the database, 2. Stop the current MySQL service, 3. Install the new version of MySQL, 4. Start the new version of MySQL service, 5. Recover the database. Compatibility issues are required during the upgrade process, and advanced tools such as PerconaToolkit can be used for testing and optimization.

What are the different backup strategies you can use for MySQL?What are the different backup strategies you can use for MySQL?Apr 30, 2025 am 12:28 AM

MySQL backup policies include logical backup, physical backup, incremental backup, replication-based backup, and cloud backup. 1. Logical backup uses mysqldump to export database structure and data, which is suitable for small databases and version migrations. 2. Physical backups are fast and comprehensive by copying data files, but require database consistency. 3. Incremental backup uses binary logging to record changes, which is suitable for large databases. 4. Replication-based backup reduces the impact on the production system by backing up from the server. 5. Cloud backups such as AmazonRDS provide automation solutions, but costs and control need to be considered. When selecting a policy, database size, downtime tolerance, recovery time, and recovery point goals should be considered.

What is MySQL clustering?What is MySQL clustering?Apr 30, 2025 am 12:28 AM

MySQLclusteringenhancesdatabaserobustnessandscalabilitybydistributingdataacrossmultiplenodes.ItusestheNDBenginefordatareplicationandfaulttolerance,ensuringhighavailability.Setupinvolvesconfiguringmanagement,data,andSQLnodes,withcarefulmonitoringandpe

How do you optimize database schema design for performance in MySQL?How do you optimize database schema design for performance in MySQL?Apr 30, 2025 am 12:27 AM

Optimizing database schema design in MySQL can improve performance through the following steps: 1. Index optimization: Create indexes on common query columns, balancing the overhead of query and inserting updates. 2. Table structure optimization: Reduce data redundancy through normalization or anti-normalization and improve access efficiency. 3. Data type selection: Use appropriate data types, such as INT instead of VARCHAR, to reduce storage space. 4. Partitioning and sub-table: For large data volumes, use partitioning and sub-table to disperse data to improve query and maintenance efficiency.

How can you optimize MySQL performance?How can you optimize MySQL performance?Apr 30, 2025 am 12:26 AM

TooptimizeMySQLperformance,followthesesteps:1)Implementproperindexingtospeedupqueries,2)UseEXPLAINtoanalyzeandoptimizequeryperformance,3)Adjustserverconfigurationsettingslikeinnodb_buffer_pool_sizeandmax_connections,4)Usepartitioningforlargetablestoi

How to use MySQL functions for data processing and calculationHow to use MySQL functions for data processing and calculationApr 29, 2025 pm 04:21 PM

MySQL functions can be used for data processing and calculation. 1. Basic usage includes string processing, date calculation and mathematical operations. 2. Advanced usage involves combining multiple functions to implement complex operations. 3. Performance optimization requires avoiding the use of functions in the WHERE clause and using GROUPBY and temporary tables.

An efficient way to batch insert data in MySQLAn efficient way to batch insert data in MySQLApr 29, 2025 pm 04:18 PM

Efficient methods for batch inserting data in MySQL include: 1. Using INSERTINTO...VALUES syntax, 2. Using LOADDATAINFILE command, 3. Using transaction processing, 4. Adjust batch size, 5. Disable indexing, 6. Using INSERTIGNORE or INSERT...ONDUPLICATEKEYUPDATE, these methods can significantly improve database operation efficiency.

Steps to add and delete fields to MySQL tablesSteps to add and delete fields to MySQL tablesApr 29, 2025 pm 04:15 PM

In MySQL, add fields using ALTERTABLEtable_nameADDCOLUMNnew_columnVARCHAR(255)AFTERexisting_column, delete fields using ALTERTABLEtable_nameDROPCOLUMNcolumn_to_drop. When adding fields, you need to specify a location to optimize query performance and data structure; before deleting fields, you need to confirm that the operation is irreversible; modifying table structure using online DDL, backup data, test environment, and low-load time periods is performance optimization and best practice.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function