In what situations might using Views degrade performance, and how can you optimize such scenarios?

Rewrite complex views to simplify SELECT logic and avoid unnecessary layers.

Ensure that predicates (WHERE conditions) can be pushed down to base tables by avoiding functions on indexed columns.

Create appropriate indexes on the underlying base tables to support the view’s filtering and join patterns.

Avoid deeply nested views—instead, create a single view with a complete, optimized query.

Replace heavy or aggregated views with materialized result tables (manually refreshed) when real-time data is not required.

Use EXPLAIN to analyze how MySQL processes the view and adjust the query accordingly.

When performance-critical queries rely heavily on large datasets and complex logic.

When the view includes expensive computations that could be precomputed.

When you require fine-grained control over joins, indexes, or execution order.