MySQL

Introduction In database systems, a one-to-many relationship is a type of cardinality that refers to the relationship between two entities (tables) where one of the entities can have many related entities. In practical terms, consider......

Introduction Regular expressions are a powerful tool for pattern matching and data manipulation. As of MySQL 8, they are fully supported, giving you the capability to perform complex searches and operations directly within your......

Introduction Loops are fundamental to programming, enabling tasks to be repeated efficiently with minimal code. While primarily associated with high-level languages, loops also have their place in structured query language (SQL). In......

Introduction Visual Studio Code (VS Code) is a powerful and extensible code editor developed by Microsoft that supports a myriad of programming languages, including SQL. If you’re working with databases, you may often need to......

Introduction In the evolving world of web development, storing and manipulating JSON data efficiently has become increasingly crucial. MySQL 8 introduces a range of functions that work with JSON data types, and one of the handiest......

Introduction Working with databases often requires you to understand and manipulate the relationships between different tables. In MySQL 8, one common task is to count the number of rows in related tables to extract summary information......

Introduction MySQL replication is a process that allows data from one MySQL database server (the master) to be replicated to one or more MySQL database servers (the slaves). Replication is a cornerstone for scaling out databases,......

Overview MySQL 8 introduced a series of powerful window functions that have greatly expanded the database’s repertoire of analytical operations. Among these are the FIRST_VALUE(), LAST_VALUE(), and NTH_VALUE() functions. This......

Introduction Join operations are fundamental in SQL, allowing users to retrieve data from multiple tables and combine it into a unified result. One of the key join types is the ‘RIGHT JOIN,’ which returns all records from......

Working with databases efficiently is a critical skill set for any developer who interacts with backend systems. When dealing with SQL databases, understanding indices — particularly, multicolumn indices — is integral to optimizing the......

This step-by-step tutorial helps you with setting up and configuring MySQL on Ubuntu 23.04 LTS. 1. Update the package index on your server by running the following command: sudo apt update 2. Install the mysql-server package by......

Introduction MySQL, one of the most popular open-source relational databases, provides powerful features to manage and query data efficiently. Tracking when records are created or modified is a common requirement in application......