Practise · Real PostgreSQL
SQL lab
Use real SQL to complete a guided task in a temporary PostgreSQL database. Your lab is isolated from every other learner and is removed when you finish or when it expires.
Your goal
Prepare a change record with compatibility checks, objective rollback criteria, verified outcome, and useful handover.
What to do
- Start your temporary database.
- Read the task and run SQL in the workspace.
- Check your work. The server will inspect the database state.
- When every task passes, continue to the assessment.
Managed PostgreSQL workspace
Real SQL lab
A release needs a new optional order reference. You must add it without a long rewrite and prove the change is safe to hand over.
Your database is temporaryIt is private to this lab and deleted when you finish or it expires.
Goal
Apply a reversible schema change, verify the application-facing result, and leave a complete operator handover record.
Start when you are ready. Creating your private database can take a few seconds. You do not need a Neon account.