The solution is to use SQL views, materialized views, or create a new table that contains only the filtered data the user needs.

Materialized views allow subsecond response times by precomputing aggregate information, and Oracle9 i dynamically rewrites SQL queries to reference existing materialized views.

This article explores the internals of materialized views and demonstrates how to precompute complex aggregates—having Oracle dynamically rewrite SQL to reference precomputed aggregate information.

Materialised view selection is a critical process in data warehousing that significantly enhances the performance of online analytical processing systems. This process involves the pre-computation ...