Conditional Aggregation Techniques for Data Analysis: Grouping by Date and Calculating Various Metrics

Grouping Consecutive Duplicates in Pandas DataFrames: A Comprehensive Guide

Extracting Unique Pages from a DataFrame in Python

Counting Active Systems by Month: A Comprehensive Approach

Groupby and Sum by 1 Column, Keep All Other Columns, and Mutate a New Column in Pandas

How to Create Gradient Colors in ggplot2: A Step-by-Step Guide for Visualizing Complex Data

Understanding Aggregate Functions and GROUP BY Clauses: How to Get the Second Highest Salary in a Database Table

Understanding GroupBy in Pandas: What Happens to the Column Used for Grouping?

Changing a Multi-Index to Normal in Python: Strategies and Best Practices

Creating Cumulative Counts in Pandas When Two Values Match