Retrieving Values and Summing Them from Nested JSON Columns in SQL: A Comprehensive Guide

Transforming CSV Data with AWS Athena and SQL: A Step-by-Step Guide

Calculating Percentage of Nulls for Each Column in Amazon Athena Using Presto Queries

Understanding Query String Array JSON: Overcoming Challenges with Data Transformations

Optimizing CROSS JOINs in Presto/AWS Athena: A Deep Dive into UNNEST Clauses and Partitioning Strategies

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

How to Duplicate Rows and Calculate Percentiles in Amazon Athena

Understanding Partitioning in Amazon Athena: How Repeated Queries Can Affect Results When Running the Same Query Twice