Counting Similar Events in the Previous 7 Days with Pandas

Mastering Union with Group By: A Comprehensive Guide to Advanced SQL Queries

Solving the "All In" Group By Problem with SQL Aggregation and COALESCE

Implementing Time Lag in R with dplyr and data.table

How to Use SQL Group By Limit 10: A Guide to Grouping Queries and Pagination

SQL Query: Casting a Group By Result into a Readable Format

Solving the Challenge: Using Hive SQL for Unique Device Counts and Exclusive Usage Determination

Solving Duplicate Data in SQL Case Statements with MAX() Function

Comparing Values of a Certain Row with a Certain Number of Previous Rows in R's data.table

Solving SQL 'GROUP BY' Multiple Rows Ignoring One Using Common Table Expressions