Introduction to MySQL Import and export database method

Operation method

1, into the MySQL directory under the Bin folder: cd MySQL to the Bin folder directory
As I entered the command line: CD C:Program filesmysqlmysql Server 4.1bin
2, Export database: Mysqldump-u user name-p database name > exported file name
As I entered the command line: Mysqldump-u root-p News > News.sql (Input will allow you to enter the password into MySQL)
(If you export a single table, enter the table name after the database name)
3, will see the file News.sql automatically generated to the bin file

Command line Import Database:

1, to move the imported. sql file to the bin file, this is a convenient path
2, the 1th step with the above export
3, enter mysql:mysql-u user name-P
As I entered the command line: Mysql-u root-p (Enter the same will let you enter the Ysql password)
4, create the database you want to build in Mysql-front, when it is an empty database, such as a new target database named News (Mysql>create DB News;)
5, enter: Mysql>use Target database name
As I entered the command line: Mysql>use news;
6, import file: Mysql>source import of the file name;
As I entered the command line: Mysql>source news.sql;

Cases

1. Export the entire database

The code is as follows	Copy Code
Mysqldump-u user name-p database name > exported file name Mysqldump-u wcnc-p SMGP_APPS_WCNC > Wcnc.sql

2. Export a table
　

The code is as follows	Copy Code
Mysqldump-u user name-P database name Table name > exported file name Mysqldump-u wcnc-p SMGP_APPS_WCNC users> wcnc_users.sql

3. Export a database structure
　

The code is as follows	Copy Code
Mysqldump-u Wcnc-p-D--add-drop-table SMGP_APPS_WCNC >d:wcnc_db.sql -D No data--add-drop-table add a drop table before each CREATE statement Import Database

Common source Commands
Enter the MySQL database console,
such as Mysql-u root-p
Mysql>use Database
Then use the source command, followed by the script file (such as the. SQL used here)
Mysql>source D:wcnc_db.sql

Linux under:

2. Method one SQL script form
Action steps are as follows:
2.1. Export SQL Script
On the original database server, you can export the SQL script using the phpMyAdmin tool, or the mysqldump command line (mysqldump command in the mysql/bin/directory).
2.1.1 with phpMyAdmin Tools
Export options, select export structure and data, and do not add drop DATABASE and drop TABLE options.
Select the Save As File option to select the gzipped option if the data is more numerous.
Save the exported SQL file.
2.1.2 with mysqldump command line
Command format
Mysqldump-u user name-p database name > database name. sql
Example:
MYSQLDUMP-UROOT-P ABC > Abc.sql
(Export database ABC to abc.sql file)
When prompted for a password, enter the password for the database user name.
2.2. Create an empty database
Create a database from the Master interface/Control Panel. Suppose the database is named ABC and the database is Abc_f.
2.3. Import SQL script into execution
There are also two methods, one using the phpMyAdmin (MySQL database management) tool, or the MySQL command line.
2.3.1 with phpMyAdmin Tools
From the Control Panel, choose to create an empty database, click "Manage", and go to the admin tools page.
On the SQL menu, browse to select the SQL file you just exported and click "Execute" to download and execute.
Note: phpMyAdmin has limits on the size of uploaded files, and PHP itself has limits on the size of uploaded files, if the original SQL file
Relatively large, you can first use gzip to compress it, for SQL files such as text files, you can get 1:5 or higher compression rate.
Gzip Use method:
# gzip Xxxxx.sql
Get
xxxxx.sql.gz files.
2.3.2 with mysql command line
Command format
Mysql-u user name-p database name < database name. sql
Example:
MYSQL-UABC_F-P ABC < Abc.sql
(Import database ABC from Abc.sql file)
When prompted for a password, enter the password for the database user name.
3 Method Two direct copies
If the database is large, you can consider using a direct copy method, but the different versions and operating systems may be incompatible between the use of caution.
3.1 Preparation of original documents
Packaged in tar as a file
3.2 Creating an empty database
3.3 Decompression
Unzip in the temp directory, such as:
Cd/tmp
Tar zxf mydb.tar.gz
3.4 copies
Copy the extracted database files to the related directory
CD mydb/
CP */var/lib/mysql/mydb/
For FreeBSD:
CP */var/db/mysql/mydb/
3.5 Permission settings
Change the owner of the document copying the past to Mysql:mysql, with the permission changed to 660

The code is as follows	Copy Code
Chown mysql:mysql/var/lib/mysql/mydb/* chmod 660/var/lib/mysql/mydb/*

Revise the mysqldump out of the data. In addition to adding the table) Type=myisam CHARACTER set GBK, add a set NAMES GBK below;
In this way, the data can be smoothly imported 4.1, without fear of garbled.

Under Windows:

DOS window
Start-> Run-> cmd
Exported as: Mysqldump-u User name-p–opt database username > database name. sql
Enter your database password!
Import as: Mysql-u user name-P database username < database name. SQL (to operate in the current directory)