What are the performance impacts of using materialized views?

What are the performance impacts of using materialized views?

Materialized views can significantly improve query performance by pre-computing and storing the results of complex queries. However, they can also introduce overhead during data updates, as the materialized view needs to be refreshed.

How do they compare to regular views in terms of performance?

Unlike regular views, which are virtual and compute results on-the-fly, materialized views store the results physically. This means they can provide faster access to data, especially for complex aggregations or joins.

Are there any downsides to using materialized views?

Yes, the main downsides include increased storage requirements and the need for regular refreshes, which can impact performance during those operations.

When should I consider using materialized views?

Consider using materialized views when you have complex queries that are frequently executed and the underlying data doesn't change often, allowing you to benefit from faster read times.