Login to your server as root
Restore data from your .sql backup file to the corresponding database:
[root@server ~]# mysql -u username -p -h localhost database_name < database_back.sql
Replace username with database username and the database_name with actual database name in which you want to store data which is present in the database_back.sql file.
If you are having dedicated server you can replace localhost with your server IP.
[root@server ~]# mysql -u username -p -h 92.48.76.90 database_name < database_back.sql
If you are logged into your server as a root user then you can just use following command directly.
[root@server ~]# mysql database_name < database_back.sql
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Always recommended to take backup for a database first, which already exists and in which you want to import the backup.
If you want to take a complete backup for your database in a .sql file, you can run following command on the server.
[root@server ~]# mysqldump database_name > database_backup.sql
Run following command if you want to take backup for a particulate table in a database.
[root@server ~]# mysqldump database table-name > table_backup.sql
Replace database with actual database name and table-name with the table name for which you want to take a backup.