Athena Presto: Transforming Data from Long to Wide with Conditional Aggregation

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

Understanding the Challenge of Unnesting varchar Array Field with {}

Creating Dynamic Date Columns in Presto SQL Using CTEs and Cross Joins

Transforming Hierarchical Data into Separate Columns Without Recursion Using Breadth-First Search Algorithm