Querying Hierarchical and Related Data with PostgreSQL Self-Joins

A self-join operates by treating a single table as two distinct entitise through table aliasing. This technique proves essential when modeling hierarchical relationships—such as organizational reporting structures—or when comparing records within the same dataset to identify duplicates or related pairs. The fundamental pattern requires assignin ...

Posted on Wed, 01 Jul 2026 17:41:34 +0000 by thecookie