Categories / group-by
Computing Distance with Relation to Other Rows in High-Dimensional Space Using R
SQL Query: Casting a Group By Result into a Readable Format
Using max() Window Function with Case When for Conditional Grouping and Aggregation in SQL
Efficiently Calculating Summary Statistics for Grouped Data Using R's dplyr Library
SQL Aggregation Techniques for Calculating Totals and Subtotals: A Comprehensive Guide
How to Filter Rows with All Fields Having the Same Value Using Aggregate Functions and Conditional Logic in SQL
Select Columns That Don't Contain Specific Values Within Groups Using SQL Server Aggregation Functions
Displaying Group By Results in Columns with SQL PIVOT Operator
Using Aggregate Function in R: Summarizing Data by Group
Using n_distinct to Extract Unique Values by Specific Conditions in R Data Analysis