Every course. One payment.
Unlock all current and future courses. Start free in either one, pay once, and nothing is ever locked again.
Free
Start your detective journey.
- The first rank of every course, free forever
- Starter drills and your first rank exams
- Your first certificates, each on a shareable link
- Sample investigations and interview questions
- Starter sandbox tools in both tracks
Pro
One-time paymentKeep every path open.
Pay once. No subscription.
- Every case across all available courses
- All drills, rank exams and certificates
- Every investigation and interview question
- Full sandbox tools and CSV imports
- All future courses included
- Your progress stays exactly where it is
Prices shown in USD. You will be charged in USD at checkout.
Build skills through practical cases.
New courses included as they arrive.
Earn shareable rank certificates.
Choose how far you go
| Feature | Free | Pro |
|---|---|---|
| Course access | First rank of each | Every case |
| Drills and rank exams | Starter set | All |
| Certificates | First rank | Every rank |
| Investigations | One per course | All |
| Interview prep | Sample questions | Every question |
| Sandbox tools | Starter tools | Full toolkit |
| Future courses | — | Included |
Questions before your next case?
Yes. Pay once and you have Pro forever. No subscription, no recurring charges, no renewal reminders, and every future course included at no extra cost.
Yes. One payment unlocks both departments: every SQL case and every Excel case, all drills and rank exams, the investigations in both tracks, and everything either track adds in future.
Yes. Pro unlocks every SQL interview question, each with a worked solution. The free plan includes a set of sample interview questions and the data role guides, so you can try interview prep before you upgrade.
The first rank of both courses, for as long as you like. In SQL that is the Rookie Detective arc: 8 cases, 2 drills, the rank exam and your certificate. In Excel it is the Ledger Clerk arc: 14 cases, 3 drills, the rank exam and your certificate. You also get one investigation in each course, the SQL sandbox and the sample interview questions. It is a free plan, not a trial, so nothing switches off and we never ask for card details.
Far enough to work with. SQL starts at your first SELECT and finishes on window functions: ROW_NUMBER, RANK, LAG and LEAD, PARTITION BY, running totals, chained CTEs and multi-table joins. Excel starts at typing in a cell and finishes on INDEX and MATCH two-way lookups, PivotTables, charts, conditional formatting and text cleanup. Neither course assumes any prior experience, and each concept arrives when a case needs it rather than as a lecture.
Both are open on the free plan, with the bigger jobs behind Pro. In the SQL sandbox you get 2 of the sample datasets, 1 CSV of your own to query straight away, and bar and line charts from any result. In the Excel sandbox you get the whole spreadsheet: every example workbook, blank books, the full ribbon, pivots, charts and five sheets a book. Pro opens every SQL dataset, 5 of your own files at once so you can JOIN across them, the remaining chart types, chart colours and export without a watermark, and importing your own CSV into the Excel sandbox.
Cases run on standard SQL (PostgreSQL-compatible). Everything you learn, from SELECTs and JOINs to aggregations, subqueries and window functions, transfers directly to MySQL, SQLite, BigQuery, Redshift and most other databases.
No. The spreadsheet runs in your browser: real formulas, real fills, real PivotTables and charts, nothing to download and no licence to buy. The skills are the ones you use in Excel or Google Sheets the next morning.
We are working on group plans for bootcamps and data teams. If you are a student or running a cohort, reach out at hello@querycase.com and we will find something that works.
Your next chapter starts here.
Get Pro and keep building your skills.