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SQL Practice app with SQL questions, queries & interview prep. Offline, free.
SQL Star - SQL Practice, SQL Questions & Interview Prep Practice SQL. Solve SQL questions. Write real SQL queries. Prepare for SQL interviews all offline, all on your phone. SQL Star is an offline SQL practice app built for students, developers, analysts, and anyone preparing for SQL interviews. Whether you want daily SQL practice, more SQL questions to solve, or a real SQL editor to test queries on the go, SQL Star has you covered. No account required. No ads. No subscription required to start. 📱 A REAL SQL PLAYGROUND ON YOUR PHONE Don't just memorize SQL syntax — practice SQL by writing and running real queries. SQL Star gives you a mobile-optimized SQL editor powered by SQLite, so you can practice SQL directly on your Android device, anytime, anywhere. With SQL Star you can: • Write free-hand SQL queries • Execute SQL queries locally, offline • Explore preloaded SQL practice datasets • Create your own custom tables for SQL practice • Choose column names and data types • Practice SQL questions on filtering, aggregation, subqueries, CTEs, window functions and more • Use one-tap SQL symbol shortcuts built for mobile typing Your SQL practice and query execution stay entirely on your device. No internet connection required. 🛠️ BUILD YOUR OWN SQL PRACTICE TABLES Want to practice SQL on your own data? The Custom Table Builder lets you create a SQL practice table without writing a long CREATE TABLE statement. Define your columns → choose data types → add rows → start writing SQL queries. 📊 PRACTICE SQL WITH REALISTIC SQL QUESTIONS Learn SQL by solving real world SQL questions Practice SQL questions across scenarios such as: • Product analytic • User activity • Supply chain Each SQL question gives you the context, schema, and sample data you need then you write the SQL query yourself. 🧠 UNDERSTAND EVERY SQL ANSWER Don't just see the answer to a SQL question understand it. Explore a detailed explanation for every SQL question and see exactly why a query produces its result. Build stronger SQL problem-solving skills by understanding the logic behind every query, not just the syntax. 💼 SQL INTERVIEW QUESTIONS & COMPANY-INSPIRED PRACTICE Get ready for SQL technical interviews with interview-style SQL questions inspired by the kinds of problems asked during real hiring processes. Practice SQL interview questions associated with companies including: Google • Amazon • Meta • Microsoft and more Important: These are company-inspired, interview-style SQL questions — not official or guaranteed questions from these companies. 🧩 SQL INTERPRETER MCQs Not every SQL interview question requires writing a query. Some SQL questions test whether you understand exactly what an existing query will do. SQL Star includes SQL Interpreter MCQs that test your ability to reason about: • SQL query behavior • NULL handling • Edge cases • SQL semantics Read the SQL query → predict what it will do → choose the correct answer. Start practicing SQL for free. The free version includes: ✓ Free-hand SQL practice ✓ Custom Table Builder ✓ 100 Scenario Session SQL questions ✓ 125 Placement SQL questions ✓ Progress tracking ✓ Offline SQL execution ✓ SQL Interpreter/Debugger MCQs, unlocked progressively ✓ No account required ✓ No ads 💎 PREMIUM — ONE-TIME PURCHASE Premium unlocks: ✓ All 365 Scenario Session SQL questions, immediately ✓ Premium SQL learning resources ✓ SQL interview and advanced reference material ✓ Database internals and performance resources ✓ System design interview resources ✓ Everything in the free version ✓ No subscription — pay once, practice SQL forever 🚀 GO BEYOND SQL PRACTICE Premium includes in-depth reference material covering: • SQL interview preparation • Advanced SQL concepts and query patterns • Database internals • Indexing and SQL performance • System design and architecture trade-offs Practice SQL. Solve SQL questions. Write SQL queries. Understand SQL. Prepare for SQL interviews all with SQL Star.