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
Explain a table's growth with visibility and maintenance evidence, then restore an appropriate vacuum response.
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 frequently updated table is growing and estimates are drifting. You need evidence before changing autovacuum settings.
Your database is temporaryIt is private to this lab and deleted when you finish or it expires.
Goal
Measure dead tuples and vacuum activity, then refresh planner statistics after a controlled update workload.
Start when you are ready. Creating your private database can take a few seconds. You do not need a Neon account.