SELECT DISTINCT ON (user_id, activity_type_id, EXTRACT(year FROM start_date_local))

Delete Records from a Table Based on Count and Latest Record

Get the Top 3 Score Rows for Each Category in a Pandas DataFrame Using Multiple Approaches

Filtering Rows with Unique IDs in MySQL: A Comparative Approach Using Subqueries and Aggregate Functions

Understanding Lateral Joins in PostgreSQL: A Deep Dive

How to Fix SQL Distinct with ORDER BY: Avoiding Duplicates and Getting the Right Results

Optimizing Postgres Queries: Simplifying Subqueries and Indexing Strategies for Performance Gains

Retrieving Maximum Values: Sub-Query vs Self-Join Approach