Home Database Mysql Tutorial MySQL用作备份还原的导入和导出命令用法整理_MySQL

MySQL用作备份还原的导入和导出命令用法整理_MySQL

May 27, 2016 pm 01:45 PM
mysql

mysqldump
命令行导出数据库:

1,进入MySQL目录下的bin文件夹:cd MySQL中到bin文件夹的目录
如我输入的命令行:cd C:\Program Files\MySQL\MySQL Server 4.1\bin
2,导出数据库:mysqldump -u 用户名 -p 数据库名 > 导出的文件名 
如我输入的命令行:mysqldump -u root -p news > news.sql    (输入后会让你输入进入MySQL的密码)
(如果导出单张表的话在数据库名后面输入表名即可)
3、会看到文件news.sql自动生成到bin文件下
Copy after login

命令行导入数据库:

1,将要导入的.sql文件移至bin文件下,这样的路径比较方便
2,同上面导出的第1步
3,进入MySQL:mysql -u 用户名 -p
如我输入的命令行:mysql -u root -p    (输入同样后会让你输入ySQL的密码)
4,在MySQL-Front中新建你要建的数据库,这时是空数据库,如新建一个名为news的目标数据库(mysql>create database news;)
5,输入:mysql>use 目标数据库名
如我输入的命令行:mysql>use news;
6,导入文件:mysql>source 导入的文件名; 
如我输入的命令行:mysql>source news.sql;
Copy after login


实例:
导出


#> cd /usr/local/src
#> /usr/local/mysql/bin/mysqldump -uroot -p123456 cacti > cacti.sql;
Copy after login


这样就看到cacti.sql导出到了/usr/local/src/目录
1.导出整个数据库


  mysqldump -u 用户名 -p 数据库名 > 导出的文件名
  mysqldump -u root -p abc > abc.sql
Copy after login


2.导出一个表


  mysqldump -u 用户名 -p 数据库名 表名> 导出的文件名
  mysqldump -u root -p abc users> abc_users.sql
Copy after login


3.导出一个数据库结构


  mysqldump -u root -p -d --add-drop-table abc >/usr/local/abc_db.sql
  -d 没有数据 --add-drop-table 在每个create语句之前增加一个drop table
Copy after login



导入


#> /usr/local/mysql/bin/mysql -uroot -p
mysql> create database cacti;   新建数据库名为cacti
mysql> use cacti;              选择目标数据库
mysql> source /usr/local/src/cacti.sql   导入数据库
Copy after login


这样就导入了cacti.sql文件

load data
(windows系统。。表结构一致的情况下)
命令在DOS的mysql/bin目录下执行:
导出:


select * from aaa into outfile "e:/a.txt";
Copy after login


导入:


load data local infile "e:/a.txt" into table aaa;
Copy after login


备份:SELECT INTO OUTFILE


SELECT * FROM hx_9enjoy INTO OUTFILE '/tmp/9enjoy.txt'
Copy after login


默认使用tab分割字段,记录使用/n分割。可以自定义三个参数。


SELECT * FROM hx_9enjoy INTO OUTFILE '/tmp/9enjoy_hx.txt' FIELDS TERMINATED BY ',' 
OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '/n';
Copy after login


即使用,分割字段,双引号限定字段内容,/n分割记录。
还可以指定某些条件的记录输出:


SELECT * FROM hx_9enjoy WHERE id < 100 INTO OUTFILE &#39;/tmp/9enjoy_100.txt&#39;
Copy after login


还原:LOAD DATA INFILE
默认情况:


LOAD DATA INFILE &#39;/tmp/9enjoy.txt&#39; INTO TABLE hx_9enjoy
Copy after login


如果有指定界定符,则加上界定符的说明:


LOAD DATA INFILE &#39;/tmp/9enjoy.txt&#39; INTO TABLE hx_9enjoy FIELDS TERMINATED BY ','
 OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '/n'
Copy after login


如果db是GBK或utf-8等编码,需要在还原时指定CHARACTER SET参数,否则还原的数据是乱码。
如:


load data infile &#39;/tmp/9enjoy.txt&#39; INTO TABLE hx_9enjoy CHARACTER SET gbk;
Copy after login



注意事项
1.mysql必须要有权限访问生成文件的那个目录
2.由于安全方面的原因,不能覆盖已存在的文件,不管这个文件的权限是怎么分配的。
3.不能直接导出一个压缩文件。

以上就是MySQL用作备份还原的导入和导出命令用法整理_MySQL的内容,更多相关内容请关注PHP中文网(www.php.cn)!


Statement of this Website
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

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

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP's big data structure processing skills PHP's big data structure processing skills May 08, 2024 am 10:24 AM

Big data structure processing skills: Chunking: Break down the data set and process it in chunks to reduce memory consumption. Generator: Generate data items one by one without loading the entire data set, suitable for unlimited data sets. Streaming: Read files or query results line by line, suitable for large files or remote data. External storage: For very large data sets, store the data in a database or NoSQL.

How to optimize MySQL query performance in PHP? How to optimize MySQL query performance in PHP? Jun 03, 2024 pm 08:11 PM

MySQL query performance can be optimized by building indexes that reduce lookup time from linear complexity to logarithmic complexity. Use PreparedStatements to prevent SQL injection and improve query performance. Limit query results and reduce the amount of data processed by the server. Optimize join queries, including using appropriate join types, creating indexes, and considering using subqueries. Analyze queries to identify bottlenecks; use caching to reduce database load; optimize PHP code to minimize overhead.

How to use MySQL backup and restore in PHP? How to use MySQL backup and restore in PHP? Jun 03, 2024 pm 12:19 PM

Backing up and restoring a MySQL database in PHP can be achieved by following these steps: Back up the database: Use the mysqldump command to dump the database into a SQL file. Restore database: Use the mysql command to restore the database from SQL files.

How to insert data into a MySQL table using PHP? How to insert data into a MySQL table using PHP? Jun 02, 2024 pm 02:26 PM

How to insert data into MySQL table? Connect to the database: Use mysqli to establish a connection to the database. Prepare the SQL query: Write an INSERT statement to specify the columns and values ​​to be inserted. Execute query: Use the query() method to execute the insertion query. If successful, a confirmation message will be output.

How to fix mysql_native_password not loaded errors on MySQL 8.4 How to fix mysql_native_password not loaded errors on MySQL 8.4 Dec 09, 2024 am 11:42 AM

One of the major changes introduced in MySQL 8.4 (the latest LTS release as of 2024) is that the &quot;MySQL Native Password&quot; plugin is no longer enabled by default. Further, MySQL 9.0 removes this plugin completely. This change affects PHP and other app

How to use MySQL stored procedures in PHP? How to use MySQL stored procedures in PHP? Jun 02, 2024 pm 02:13 PM

To use MySQL stored procedures in PHP: Use PDO or the MySQLi extension to connect to a MySQL database. Prepare the statement to call the stored procedure. Execute the stored procedure. Process the result set (if the stored procedure returns results). Close the database connection.

How to create a MySQL table using PHP? How to create a MySQL table using PHP? Jun 04, 2024 pm 01:57 PM

Creating a MySQL table using PHP requires the following steps: Connect to the database. Create the database if it does not exist. Select a database. Create table. Execute the query. Close the connection.

The difference between oracle database and mysql The difference between oracle database and mysql May 10, 2024 am 01:54 AM

Oracle database and MySQL are both databases based on the relational model, but Oracle is superior in terms of compatibility, scalability, data types and security; while MySQL focuses on speed and flexibility and is more suitable for small to medium-sized data sets. . ① Oracle provides a wide range of data types, ② provides advanced security features, ③ is suitable for enterprise-level applications; ① MySQL supports NoSQL data types, ② has fewer security measures, and ③ is suitable for small to medium-sized applications.

See all articles