pg_ivm
Provides Incremental View Maintenance (IVM) for PostgreSQL, optimizing view updates by applying incremental changes. Compatible with PostgreSQL 13 to 17, it updates views immediately using triggers. Allows efficient creation of Incrementally Maintainable Materialized Views (IMMV) with automatic indexing for quick updates. Supports inner joins, DISTINCT clauses, and several aggregates. Installation needs correct setup, and usage guidelines are available for effective integration.