Categories / group-by
Using n_distinct to Extract Unique Values by Specific Conditions in R Data Analysis
Calculating Percentage of Terminated Employees by Department in R: A Comparative Analysis of dplyr, data.table, and Base R
How to Select Latest Submission for Each Subject Using SQL GROUP BY as Inner Query
Conditional Diff Function in R: A Custom Approach for Consecutive Differences with Specific Id Numbers
Using GROUP_CONCAT to Aggregate Text Results in MySQL Databases: Best Practices and Troubleshooting Strategies
Creating a New Dummy Variable Based on Existing Dummy Variable Values in R using dplyr Package
Performing Group-By Operations on Another Column in R Using Dplyr Package
Grouping Sequential Data in R with dplyr Package for Consecutive Values
Counting Similar Events in the Previous 7 Days with Pandas
Grouping Data by Latest Entry Using R's Dplyr Package