Data export/import on MySQL

MySQL provides you with a lot of flexibility when it comes to import or export data between databases. Let’s examine a few possibilities to export/import data:

To export a whole database

The following command will export a whole MySQL database on a sql file:

mysqldump -u user DB_NAME > /tmp/file.sql

To export a single table

The following command allows you to dump a table’s metadata and data into asql file:

mysqldump -u user DB_NAME TABLE_NAME > /tmp/fle.sql

To export a portion of table data

It’s also possible to export data based on a sql criteria, like using a “where” clause on a sql query. The following command shows how to export table data having an ID lower than 100:

mysqldump -u user -w "ID < 100" DB_NAME TABLE_NAME > /tmp/file.sql

To import data into a MySQL database

And finally for the import part, here’s how to import data when you previously exported it on a sql file:

mysql -u user DB_NAME < tableNameFile.sql

Tags:

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