Работаю младшим аналитиком всего месяц, и этот курс стал спасением — до него SQL казался нагромождением непонятных слов. Автор объясняет JOIN на простых схемах, а не сухим текстом, и каждый запрос сразу проверяешь на реальной базе данных. Особенно понравился блок про агрегатные функции и GROUP BY — раньше я путалась, а теперь строю отчёты за пять минут. Отдельно отмечу практику: задания похожи на то, что реально просят на собеседованиях. После прохождения я уже уверенно написала свой первый рабочий запрос без подсказок коллег. Теперь SQL для меня не страшный набор букв, а обычный рабочий инструмент.
Practical SQL for Junior Data Analysis
Master the essential SQL commands and analytical techniques needed to retrieve, clean, and transform data for reporting and insights.
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About this course
SQL is the universal language of data. If you want to move into a data analysis role, proficiency in writing efficient queries is non-negotiable. This course provides a solid foundation in SQL, specifically tailored for the tasks data analysts perform daily. You will move beyond simple selects to confidently handle complex joins, manage large datasets, and apply advanced analytical functions (like window functions) to extract meaningful business insights.
What you'll learn:
* Understand core database concepts and relational schema design principles.
* Practice writing efficient queries using SELECT, WHERE, GROUP BY, and HAVING clauses.
* Master complex data retrieval using various JOIN types and Common Table Expressions (CTEs).
* Apply powerful analytical tools, including subqueries and window functions, for advanced metric calculation.
* Learn basic performance concepts like indexing to optimize query speed and efficiency.
* Clean and transform raw data using string manipulation, date functions, and conditional logic.
The course begins with foundational terminology and database structure, then progresses through data querying and manipulation, concluding with advanced techniques necessary for deep analytical work. Each section includes practical exercises to reinforce understanding. This course is designed for absolute beginners, aspiring data analysts, or professionals looking to transition into a data-focused role. No prior SQL or programming experience is required. Start your journey toward becoming a skilled data analyst today.
What you'll get
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Short & focused
2h 30m of practical content
Certificate of completion
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Performance detail
Coursework summary
Lessons completed
14 / 14
Practice questions
26 / 28
Assignments submitted
4 (avg 4.5 / 5)
Capstone project
Reviewed — 4.6 / 5
Total practice
6.2 hrs
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Top 12% of 1,625
Time to completion
11 days (median: 22)
Mastery score
91 / 100
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94%
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Reviews (13)
I came into this with zero database experience and left able to write multi-table joins on my own. The instructor breaks down SELECT, WHERE, and GROUP BY using a sample sales database that actually feels realistic. My only gripe is the subquery section moves a little fast for a true beginner.
Solid SQL basics, joins felt rushed.
Malinaw na paliwanag sa SQL joins.
Great intro, wish there was more SQL practice.
This course took me from barely knowing what a SELECT statement was to writing multi-table queries confidently in a couple weeks.
Наконец поняла разницу между INNER и LEFT JOIN — объяснили на пальцах, с настоящими таблицами.
Aprendí a usar JOINs y GROUP BY para limpiar y resumir datos reales, justo lo que necesitaba para mis primeros reportes.
JOIN mantığını ilk kez gerçekten kavradım, örnekler gerçek bir veri tabanı üzerinden anlatılıyor.
Por fin entendí los JOIN y las subconsultas gracias a los ejemplos con bases de datos reales, no solo teoría.
The JOIN and GROUP BY lessons were exactly what I needed for my first data analyst job, even if the practice exercises could use more variety.
Non avevo mai scritto una query SQL prima di questo corso e ora riesco a fare JOIN e subquery senza panico. Gli esercizi sono presi da dataset realistici, il che aiuta molto a capire il senso pratico. L'unico difetto è che alcune lezioni sulle window functions vanno un po' veloci.
Good pacing on the WHERE and GROUP BY sections, though I had to look up window functions elsewhere since the course only skims them.
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Can I get a refund? +
Yes — full refund within 14 days, no questions asked.
How long will I have access? +
Forever. Once you purchase, the course is yours to revisit anytime.
Will I get a certificate? +
Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.
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