Using ‘AFTER UPDATE’ trigger in MySQL 8: Tutorial & Examples
Introduction Triggers in MySQL are stored programs that automatically execute or fire when certain events occur. An AFTER UPDATE trigger happens immediately after a specified update operation is…
Using ‘BEFORE INSERT’ trigger in MySQL 8: A Practical Guide
Introduction In handling databases, one of the key aspects of maintaining data integrity is the use of triggers. MySQL, a powerful database management system, provides various types of…
How to Set Expiration Date for a Record in MySQL 8
Introduction Managing data efficiently often requires setting expiration dates for records in databases, enabling automatic cleanup or archiving of outdated information. MySQL, a widely-used relational database system, provides…
Using GROUP_CONCAT() function in MySQL 8: A Practical Guide
The GROUP_CONCAT() function in MySQL is a powerful tool when working with aggregations. It enables the creation of a concatenated string result from a group of rows. Introduction…
Using RANK() and DENSE_RANK() in MySQL 8: A Practical Guide
Introduction When working with data in MySQL, ranking rows within a result set is a common task. This is especially true when dealing with analytics and leaderboards. MySQL…
Using ROW_NUMBER() function in MySQL 8: A Practical Guide
Introduction In the world of databases, specifically in the management of MySQL 8, knowing how to sequentially order your data is a quintessential skill. The introduction of window…
Cross Join in MySQL 8: A Practical Guide
Overview Understanding how to manipulate and retrieve data efficiently is a vital skill for developers and database administrators. Among the various types of joins in SQL, one that…
MySQL: IN and NOT IN Operators – Explained with Examples
Introduction In the realm of database management, MySQL stands out as a widely-used open-source relational database system. A fundamental task when working with databases is querying data sets…
MySQL: How to deal with redundant and duplicate indices
Introduction Dealing with redundant and duplicate indices in MySQL is an important aspect of database optimization. Proper indexing can speed up the performance of your queries; however, having…
MySQL 8: How to clean unused indices in a database
Introduction As databases grow and evolve, the accumulation of unused and redundant indices can become a real concern for MySQL administrators. Not only do they take up valuable…
