[From] http://www.blogjava.net/hh-lux/archive/2007/05/05/115419.html
1. Export the entire database
Mysqldump-u username-p Database Name> exported file name
Mysqldump-u wcnc-p smgp_rj_wcnc> wcnc. SQL
2. Export a table
Mysqldump-u user name-p database name Table Name> exported file name
Mysqldump-u wcnc-p smgp_rj_wcnc users> wcnc_users. SQL
3. Export a database structure
Mysqldump-u wcnc-p-d -- add-drop-table smgp_apps_wcnc> d: wcnc_db. SQL
-D no data -- add-drop-table adds a drop table before each create statement.
4. Import the database
Common source commands
Go to the mysql Database Console,
For example, mysql-u root-p
Mysql> use Database
Then run the source command. The following parameter is the script file (for example,. SQL used here)
Mysql> source d: wcnc_db. SQL (Note: If source d:/wcnc_db. SQL is written, a syntax error is reported)