Ekspor Impor Database Localhost via CMD

Go to folder C:\wamp\bin\mysql\MYSQL_VERSION\bin

Hit shift + right-click in that folder and select "Open command window here" from the menu that pops up.

This will open a command window in the path you are already in, so C:\wamp\bin\mysql\MYSQL_VERSION\bin

Enter any of the MySQL commands you like with any of the executables you find in that folder.

To export:

mysqldump -u db_user -pDB_PASSWORD db_name > /path/to/save/backup_file.sql
To import:

mysql -u db_user -p db_name < /path/to/save/backup_file.sql
The user has a password (DB_PASSWORD) and that needs to be directly behind -p without a space. Beware like this the password can be seen by other programs.

If you do not specify a password in the command directly after the -p flag and just use the db_name you will be asked to put in the password interactively every time you run the command.

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Follow the following steps.

Run cmd command
Type c: or d: on command prompt. This will be based on your WAMP server installations.
Assuming you have installed wamp on C: drive.
C:\>cd wamp
C:\wamp>cd bin
C:\wamp\bin>cd mysql
C:\wamp\bin\mysql>cd mysql15.5.8
C:\wamp\bin\mysql\mysql15.5.8>cd bin
C:\wamp\bin\mysql\mysql15.5.8\bin>mysql.exe -u root
Now you'll get mysql command prompt.

** Note Here My MySql version ins 15.5.8 it may change based on your wamp installation. Now you can follow the answer by @Matei. I'm pasting his answer here. Hope this will help you.

to export:

mysqldump -u username -p databasename > filename.sql
and to Import:

mysql -u username -p databasename < filename.sql