Database Administration Development Tutorials, Guides & Insights

DROP INDEX idx_last_name ON users;

Use the EXPLAIN command to analyze how a query uses indexes and to identify potential improvements:

To import data from a SQL file, use the mysql command-line tool to execute the SQL statements contained in the file.

Use the following command to import a database from a SQL file:

Monitoring MySQL database performance is crucial for maintaining efficient and reliable database operations. By keeping an eye on performance metrics, you can identify bottlenecks, optimize queries, and ensure that your database is running smoothly. This tutorial will cover various tools and techniques for monitoring MySQL performance.

• Basic understanding of MySQL and SQL operations.
• Access to a MySQL server.
• Familiarity with command-line tools and basic server administration.

LOCK TABLES accounts WRITE;

-- Perform operations here

UNLOCK TABLES;

• Keep transactions short to reduce the risk of deadlocks and improve performance.
• Use the appropriate isolation level based on your application’s consistency and performance requirements.
• Regularly monitor and optimize your queries to minimize lock contention.

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

SELECT table_schema AS "Database",
       ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) AS "Size (MB)"
FROM information_schema.tables
WHERE table_schema = 'your_database_name'
GROUP BY table_schema;