How to Add a New Column to an Existing SQL Query for Enhanced Data Analysis and Reporting

Inserting Data from a Subquery into a New Table Using the INSERT INTO SELECT Statement

Finding Equal Row Sets Across Different Tables in SQL Server Using the FOR XML Trick or Alternative Approaches

Calculating the Median of Aggregated Rows with SQL: A Practical Guide for Data Analysis

Optimizing Data Aggregation: Two Approaches to Exclude Previously Counted Records