Understanding Grouping and Aggregation in SQL: A Deep Dive into Using `GROUP BY` with Additional Columns

Efficiently Calculating Summary Statistics for Grouped Data Using R's dplyr Library

Unlocking Windowed Functions in SQL: A Practical Guide to Ranking and Filtering Data

Unpivoting a Query in Presto to Get Column Names Based on Condition

Counting Distinct IDs for Each Day within the Last 7 Days using SQL