Using Window Functions to Get the Last Fixed Price per Product from a Table in MySQL

Handling Empty Rows in MySQL SELECT JOINs: A LEFT JOIN Example

Understanding SQL Queries with NOT IN Clause: A Deep Dive into Date Filtering

Understanding SQL Wildcard Characters and Character Classes: A Guide to Effective Data Filtering

Grouping Duplicate Elements in SQL: A Step-by-Step Guide Using GROUP_CONCAT

Selecting Values with Fallbacks: SQL Approaches for Complex Scenarios

Joining Two SQL Subqueries: A Comprehensive Guide to Improving Performance and Scalability

Understanding MySQL Stored Procedures and the Mysterious Case of the Unrestricted WHERE Clause: Best Practices for Avoiding Unexpected Behavior in Stored Procedures

Mastering Transactions in MariaDB: Best Practices for Data Consistency and Integrity

Understanding PHP's PDO Fetch Method and Array Return Value