Materialized views and partitions
Some workloads benefit from storing a precomputed result or splitting a large table into managed pieces. Both choices introduce operating responsibilities.
Materialized views
A materialized view stores query results rather than recalculating them on each read. Refresh rules determine freshness. PostgreSQL provides CREATE MATERIALIZED VIEW; SQL Server indexed views are a different feature with specific restrictions.
Partitioning and pruning
Partitioning divides a logical table, often by a date range. Partition pruning lets compatible filters avoid irrelevant pieces. It does not mean every query automatically becomes faster.
Refresh and maintenance
Consider refresh time, storage, incremental updates, late-arriving data and failed jobs. A stale precomputation can be quickly retrieved and still be wrong for today’s decision.
Practice limitations
SQLite does not provide native PostgreSQL-style materialized views or declarative table partitioning. The runnable CREATE TABLE AS example is a snapshot; rerunning its SELECT is not an automatic refresh mechanism.