Troubleshooting Unique Row Issues in SQL Queries Due to Incorrect Use of DISTINCT Keyword

SQL Window Functions: Summing Values Across Categories Within a Variable

Mastering the Aggregate Function in R: Handling Missing Values and Simplification

Aggregating Daily Returns Across Multiple Dates in R

Understanding How to Handle NA Values When Using R's Aggregate Function for Data Summarization

Aggregating and Conditional Outputs in R Using data.table

Understanding tapply and Aggregate in R: A Deep Dive into Performance and Best Practices