Calculating Active IDs by Day Using Cumulative Sum Aggregation in Athena

Retrieving Running Instances: A Two-Inner-Join Approach to Combining Data from Multiple Tables in AWS Athena

Converting Dates to Epoch UTC in AWS Athena: A Step-by-Step Guide

Using Window Functions for Average: A Deep Dive into Presto SQL

Comparing Duplicate Rows Over Two Tables in Athena: A Step-by-Step Guide to Using Join Operations and Counting Distinct Elements

Understanding the Limitations of Last Value and First Value in AWS Athena: Best Practices for Window Functions