MySql安装及初级使用详解_MySQL
1. sudo apt-get install mysql-server, input administrator password , '123'
2. enter mysql promot in command line, 'mysql -u root -p', input password
3. create database "CREATE DATABASE xoops;"
4. 允许root远程登陆: 从所有主机:grant all privileges on *.* to root@"%" identified by "passw0rd" with grant option;
5. 建数据库,创建user:
1) 建库:create database test1;
2) 建用户,赋权:grant all privileges on test1.* to user_test@"%" identified by "passw0rd" with grant option;
3) 删除数据库:drop database test1;
6. 删除权限:
1) revoke all privileges on test1.* from test1@"%";
2) use mysql;
3) delete from user where user="root" and host="%";
4) flush privileges;
8. 显示所有的数据库:show databases; 显示库中所有的表:show tables;
9. 远程登录mysql:mysql -h ip -u user -p
10. 备份和恢复
备份单个数据库:mysqldump -uroot -p -B dbname > dbname.sql
备份全部数据库:mysqldump -uroot -p --all-databases > all.sql
备份表: mysqldump -uroot -p -B dbname --table tablename > tablename.sql
恢复数据库:mysql -uroot -p
恢复表:mysql -uroot -p dbname
11. Sample:创建数据库表 mysql>CREATE DATABASE IF NOT EXISTS my_db default charset utf8 COLLATE utf8_general_ci;
#注意后面这句话 "COLLATE utf8_general_ci",大致意思是在排序时根据utf8变码格式来排序
#那么在这个数据库下创建的所有数据表的默认字符集都会是utf8了
mysql>create table my_table (name varchar(20) not null default '')type=myisam default charset utf8; #这句话就是创建一个表了,制定默认字符集为utf8
C++ sample code:
1. boost libary is required. "sudo apt-get install libboost-date-time-dev"
2. http://dev.mysql.com/tech-resources/articles/building-mysql-connector-cpp.html
3. CREATE DATABASE FaceDB4. CREATE TABLE facetable (id INT,facename TEXT,username TEXT)

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.
