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

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.

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