Easy SQL Test example for Data Analyst 2025 | SQL Interview Questions and Answers

Are you prepping for an entry-level SQL test or just want to sharpen your SQL skills? In this video, we go through a practical example of an easy SQL test, covering common question types that assess your fundamental SQL knowledge. We guide you through each question step-by-step, showing not only how to answer but the reasoning and logic behind each solution. Topics Covered: 1. Data Selection & Ordering - Learn how to select specific data fields and organize them with ORDER BY. 2. Applying Conditions - Master filtering data with WHERE clauses to meet specific conditions. 3. Basic Aggregation - Discover how to use SUM and other aggregation functions to summarize data. 4. Multiple Aggregations - Understand how to apply multiple aggregations in a single query for in-depth analysis. 5. Conditional Aggregations - Practice using conditions with aggregations for more flexible data analysis. 6. Creating New Columns & Conditional Logic - Use CASE/IFF statements to add conditional columns for a more dynamic dataset. 7. Joining & Unions - Learn to bring data together using JOINs and UNIONs, essential skills for real-world SQL tasks. This walkthrough is ideal for beginners looking to strengthen their SQL foundations or those about to take an introductory SQL test. By the end of this video, you’ll be more confident in handling a variety of SQL challenges and better prepared for your next SQL assessment! 🔔 Don’t forget to like, share, and subscribe for more SQL tutorials, coding tips, and interview prep! 🔗 Chapters: 00:00 – Intro 01:03 – Raw Data 01:49 – Question 1: Aggregation 02:51 – Question 2: Conditions & Aggregations 05:13 – Question 3: Sub-Query & Aggregation 08:24 – Question 4: Joins, Aggregations & Conditions 11:29 – Question 5: Joins, Cleaning, Aggregations 15:00 – Question 5: CASE/IFF, Calculated Column Github Link: https://github.com/Pitsillides91/SQL-Tutorials-/tree/main/SQL_Videos_2024/SQL_Test_Easy Connect with me on LinkedIn: https://www.linkedin.com/in/yiannis-pitsillides-8b103271/ Follow me on X: https://x.com/pitsillides91 EXCEL: Excel top 5 Interview Questions: https://youtu.be/lp0NwAIcw_c?si=32mHS-_e7U4eYKc2 Excel top 7 Most Used Formulas: https://youtu.be/VvgQjxsHnMQ?si=2EOabWWRNnCpzBT8 Excel Interview Test – Junior: https://youtu.be/p6I3xXYmn2s?si=4k3U5xlPXFwPtXG2 Excel Interview Test – Intermediate: https://youtu.be/ZrWrxF2doRc?si=r5DtQa7dbrHbEJ9v Excel Interview Test – Difficult: https://youtu.be/QGQCW6s_r7A?si=ZLVka_wEBSq6HYFP Excel Interview Test – Average Part 1: https://youtu.be/FEyV96xE0fU?si=tVobgo9Oh9kCBir_ Excel Interview Test – Average Part 2: https://youtu.be/eCN5PuQBMqk?si=cHMgh0zvugLBPGk6 SQL: SQL Tutorial from scratch part 1: https://youtu.be/Xr2xg_u-wzo?si=od0FCH3u0VeY4QC3 SQL Tutorial from scratch part 2: https://youtu.be/bEeHNeED8zg?si=zhJgRA5qMx7QMZmY SQL Tutorial JOINs: https://youtu.be/V4aMAU9VLNo?si=Jd_yWYOijcAzlf9f SQL Top 5 Interview Questions: https://youtu.be/FTamRSw-sFM?si=C4ob1-Ne_Z5sVzV9 SQL Interview Test – Beginner: https://youtu.be/b4Fx5DfrN14?si=ze6IhkC5-qM1mKhk SQL Interview Test – Junior: https://youtu.be/AcNh0cWGYeM?si=orYDlZpodJ2rokAW SQL Interview Test – Intermediate: https://youtu.be/OjQjHd9CT3o?si=7RkBtWkX8qXKc4Qh SQL Interview Test – Difficult: https://youtu.be/edDrSXdRtmE?si=4mUd1EppJT6MNDpK PYTHON: Python Tutorial from Scratch Part 1 – https://youtu.be/nZyKxP04co4?si=zNzr4qyW_CUGQZFO Python Tutorial from Scratch Part 2 - https://youtu.be/JjFifnK3bVg?si=K34fpCUTH2UiDMpy Python Tutorial from Scratch Part 3 JOINS - https://youtu.be/tMv74JmjZ_Y?si=-14Y9Z3X14rlfGWj Python Tutorial from Scratch Part 4 Visuals - https://youtu.be/SQfEeFNAvdE?si=ifkieyVkylFey-PU Python Tutorial from Scratch Part 5 Visuals - https://youtu.be/CsqCLaLMGn4?si=hXOlixcYk0qBLgnE Python top 5 Interview Questions: https://youtu.be/rI0L8qxydZ0 Python Interview Test – Beginner: https://youtu.be/idANfk_F3NY Python Interview Test – Junior: https://youtu.be/xxrn8Uf_7ZA Python Interview Test – Intermediate: https://youtu.be/e02W-jsMaKU Python Interview Test – Difficult: https://youtu.be/e02W-jsMaKU