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
Locate the replication pipeline boundary causing lag and make a defensible failover recommendation.
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 standby alert fires before a planned maintenance window. You must decide whether failover is ready using database evidence.
Your database is temporaryIt is private to this lab and deleted when you finish or it expires.
Goal
Read replication-capability evidence and make a failover-readiness decision that distinguishes lag from confirmed recovery safety.
Start when you are ready. Creating your private database can take a few seconds. You do not need a Neon account.