Categories / group-by
How to Handle Multiple Data Types in Pandas GroupBy Operations
Solving SQL 'GROUP BY' Multiple Rows Ignoring One Using Common Table Expressions
Using Aggregate Function in R: Summarizing Data by Group
Selecting Rows with Maximal Values in a Column Using Pandas GroupBy Operations
Grouping Data by Latest Entry Using R's Dplyr Package
Counting Distinct IDs for Each Day within the Last 7 Days using SQL