How to Retrieve Maximum Value Based on Join Conditions: A Step-by-Step Guide to Filtering Latest Rate for Each Employee While Ensuring Week Before Target Week

Understanding Recursive Functions in PHP and MySQL: A Comprehensive Guide

Optimizing Your MySQL Queries: A Deep Dive into LIMIT and OFFSET

Unifying and Analyzing Conversations: A SQL Query to Retrieve User Chat Histories

Understanding SQL Queries in CodeIgniter: A Step-by-Step Guide to Avoiding Subquery Issues

Getting One Row from a Table Based on Another: A Deep Dive into Joins and Subqueries

Full Join vs. Where Clause: A MySQL Gotcha and How to Work Around It

Comparing Excel Records to Database Tables: A Step-by-Step Guide to Retrieving Timestamps

Understanding Timestamp-Based Deletion in SQL: A Guide to Efficient Querying and Data Management

Mastering SQL Left Join Queries with All Restrictions from Result