Focused practice · SQL Pro
Prepare for SQL interviews with hands-on exercises
Three series of ten challenges to measure pace, score and skills to revisit, without attributing questions to real companies.
Choose a series that matches your current level.
Start with direct queries or jump into advanced cases. Each series reuses ten verified catalogue exercises.
01Easy45 min
Recommended starting pointDirect, reliable queries
10 focused challengesThe best starting point to check SELECT, filters and precision.
Skills covered
SELECTWHERE · ORDER BYDISTINCT · LIMIT
Try one challengeFull series included with SQL Pro
02Medium45 min
Analysis under pressure
10 focused challengesCombine several concepts while keeping a clear method against the clock.
Skills covered
INNER JOINCTE · CASEDates · GROUP BY
Try one challengeFull series included with SQL Pro
03Hard45 min
Complex cases to defend
10 focused challengesSolve multi-step analyses and verify the reliability of your result.
Skills covered
level of detail · joins · AggregationsCohorts · Retention · DatesRFM · Segmentation · CASE
Try one challengeFull series included with SQL Pro
Practice access
The first 50 accounts can test SQL Pro for free.
Create an account with no bank card to open all three series for 30 days.
These challenges are created by SQL.tn from fictional situations. They are not presented as questions from well-known companies.