Running Sums for Current Month with Cap on Cumulative Running Total Using MySQL 8.0 Window Functions and Self-Join Aggregation

Conditional Aggregation in SQL: Unpivoting Data with Different Criteria

Calculating Minimum-Max Energy Consumption by Month and Site ID: A Step-by-Step Guide to Avoiding Common Pitfalls

Optimizing Query Performance: Joining Latest Records Without Traditional INNER SELECT

Understanding Database Querying: How to Retrieve Records Added After a Particular Date and Time Without a DateTime Column

Updating Rows in a Table with RMySQL: A Step-by-Step Guide to Efficient Data Updates

Handling Date Ranges Without Using Lag or Lead Functions in MySQL

How to Efficiently Group Data Using SQL Functions in Laravel

Using Window Functions to Calculate Group Averages

Grouping Data by Multiple Conditions: A Deep Dive into MySQL Query Optimization