Select Star SQL is an interactive book that teaches SQL by running queries against a real-world dataset.
Free
24 alternativesSQL PD
SQL Police Department teaches SQL through online crime-solving missions that require building queries and reviewing results.
About SQL PD
SQL PD is a browser-based game that teaches SQL through crime-solving missions. Each mission, called a brief, asks the player to build a query, run it, review the results, and submit the completed brief. The homepage describes an in-game guide for players who do not know SQL or need a hint. The guide covers what SQL is, how statements are structured, and common clauses and conditions.
Pricing is not confirmed. The homepage shows a "Buy a license" option, a login link, and labels such as "Unregistered Personnel" and "SQL Intern," but the visible text does not say what a license includes.
Key features
- Crime-solving missions that require building and running SQL queries
- Query building by clicking SQL keyword and filter fragments
- Result review and brief submission after completing each mission
- Built-in guide tab explaining SQL basics and common clauses
- Lessons on DISTINCT, ORDER BY, LIMIT, and WHERE conditions
- Feedback for SQL errors and queries that return no rows
Best for: Learners who are new to SQL and want hands-on practice through a game-style format.
Good for
- Practice is framed as a mission, so queries are tied to a task with a goal.
- A guide tab is available for users who need explanations or hints.
Watch out for
- The visible homepage text does not state which features require a license.
SQL PD at a glance
- Website
- sqlpd.com
- Category
- Education & Learning › Learn to Code
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
SQL PD alternatives
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SQL PD FAQ
Do I need to know SQL before starting?
No prior knowledge is required according to the homepage, which offers a guide tab for users who do not know SQL or need a hint.
What topics does the guide cover?
The guide covers what SQL is, the structure of a statement, and SELECT, DISTINCT, ORDER BY, LIMIT, and WHERE conditions, including numeric and string comparisons and IN lists.
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