How to Solve the Performance Problem of Deduplication Caused by Multi-Column Grouping in Window Queries

This article discusses Recursive Resolution and the Weighted Scan of the Sort Field.

PostgreSQL Sorting Deduplication and Limit Query Optimization – Recursion vs. Group

This short article explains how PostgreSQL works with deduplication and limit query optimization.

How to Optimize Duplicate Data Cleansing in PostgreSQL

This article evaluates different duplicate data cleansing techniques while considering several technical database issues in PostgreSQL.