Mastering Group by and Conditional Count in R's dplyr Library: A Deep Dive

Grouping Items Together Based on a Value in Another Column: A SQL Solution

Filtering Groups in R: A Deeper Dive into the `any` and `all` Functions for Data Analysis

Splitting a Pandas DataFrame into Equal Number of Groups Based on One Specific Column

Grouping Pandas Series Based on Condition: A Comprehensive Guide

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