How do you create a View in MySQL?

0-2 years experience

1. 1We have a table `orders(id, customer_id, total)` and need a view that shows only orders where total exceeds 100. How would you write that view?
2. 2If you create a view and then insert a new row into the source table, will the view automatically include that row? Why or why not?
3. 3You try to create a view but MySQL returns a syntax error. Walk me through how you would debug the statement.

2-5 years experience

1. 1Our reporting feature needs a view that joins `orders` and `customers` and excludes cancelled orders. Describe how you'd design the view and any indexing considerations.
2. 2A new column was added to the `orders` table and the existing view started failing. How would you troubleshoot and fix the view?
3. 3What are the trade‑offs between using a MySQL view versus writing the join logic directly in application code for a high‑traffic endpoint?

5-8 years experience

1. 1The nightly analytics job runs a view that aggregates millions of rows and is becoming a bottleneck. What performance issues might you see and how would you improve it?
2. 2We isolate tenant data by giving each tenant a view that filters on `tenant_id`. Discuss security and maintenance challenges at scale and how you'd address them.
3. 3If a view references another view and the base tables change schema, what cascade effects occur and how would you manage versioning of dependent views?

8+ years experience

1. 1Our platform is migrating from MySQL to a distributed SQL database. How would you handle existing MySQL view definitions to keep functionality while minimizing disruption?
2. 2We have dozens of services that rely on shared views for data governance. Describe an architecture and process for managing view lifecycle, testing, and deprecation across teams.
3. 3For near‑real‑time analytics we need hundreds of view‑like structures that stay fresh within seconds. What architectural patterns could replace MySQL views to meet latency and scalability requirements?