Tutorials Programming Tutorials, Guides & Best Practices

Managing MySQL databases involves a variety of operations, from backing up data to restoring it and handling foreign key constraints. By mastering these techniques, you can ensure that your database operations are efficient, secure, and reliable.

This tutorial covered essential MySQL commands and practices, which are invaluable for database administrators and developers alike. Whether you are working on a development server or making changes to a live production environment, these techniques will help you manage your data effectively.

• /path/to/export.csv: The file where the data will be exported.

MySQL Workbench provides a graphical interface for data import and export.

Use LIMIT to restrict the number of rows returned by a query, especially for large datasets.

SELECT first_name, last_name FROM users LIMIT 10;

START TRANSACTION;

INSERT INTO accounts (user_id, balance) VALUES (1, 100);

UPDATE accounts SET balance = balance - 50 WHERE user_id = 1;

COMMIT;

In this example, two operations are performed within a transaction: inserting a new account and updating the balance. If any operation fails, you can use ROLLBACK to undo the changes.

To view the size of a specific database, you'll query the information_schema.tables table. This table contains metadata about all the tables in your databases.

Execute the following query, replacing your_database_name with the name of your database: