🔗 How to achieve pruning when querying by non-partitioned columns in PostgreSQL

Can querying by non-partition key columns really benefit from partition pruning in PostgreSQL? This article details techniques to improve performance when filtering by non-partition key columns, using practical examples to illustrate how clever indexing and database constraints can lead to effective pruning. The author highlights key strategies—like utilizing local indexes and communicating with the database optimizer through check constraints—to achieve significant performance gains. Insights are drawn from a real-world scenario where event logging across multiple partitions showcases the challenges and solutions offered by a well-structured database design. Readers interested in optimizing PostgreSQL queries for better speed and efficiency will find this guide particularly useful.