Question 1

What happens to my progress if I cancel?

Accepted Answer

Your progress is saved permanently. If you cancel, you keep access to the Rookie path and all your XP and badges remain on your profile. Resubscribe at any time and continue from exactly where you left off.

Question 2

Do I need a credit card to start?

Accepted Answer

No. The Rookie Detective path (all 10 cases, the exam, and your certificate) is completely free. No payment details required to sign up.

Question 3

What SQL dialect does QueryCase use?

Accepted Answer

Cases run on standard SQL (PostgreSQL-compatible). Everything you learn: SELECTs, JOINs, aggregations, subqueries, window functions — it all transfers directly to MySQL, SQLite, BigQuery, Redshift, and most other databases.

Question 4

How hard are the advanced cases?

Accepted Answer

The Detective and Senior Detective arcs introduce JOINs, GROUP BY, and subqueries through the case narrative. Concepts appear when the story needs them. The Chief Detective arc covers more complex multi-step queries and timed Investigations. No prior SQL experience required to start.

Question 5

Is there a student or team discount?

Accepted Answer

We're working on group plans for bootcamps and data teams. If you're a student or running a cohort, reach out at hello@querycase.com and we'll find something that works.