Tags / group-by
Collapse Data by ID and Gender Using dplyr in R
Get the Top 3 Score Rows for Each Category in a Pandas DataFrame Using Multiple Approaches
Counting Total Matching Rows Without Filtering Them with Join Table
Optimizing Time Duration Data Retrieval Using GROUP_CONCAT in MySQL
Mastering GroupBy in Pandas: Efficient Data Counting Techniques
Modifying Data Frames in R for Effective Formatting and Analysis
To help with the problem, I will reformat the code and provide additional context as needed.
Un-grouping Pandas DataFrames: A Step-by-Step Guide to Reversing Groupby Operations
How to Use Conditional Aggregation to Simplify Complex Queries in MySQL
Understanding SQL Aggregation with Multiple Columns: Alternative Approaches and Best Practices