SQL for Data Analysis: Querying Databases for Beginners — PickAClass
4.7 (3) ⏱ 2h 30m 📚 25 lessons 🎧 Audio version

SQL for Data Analysis: Querying Databases for Beginners

Learn to write clean, efficient SQL queries to extract, filter, and analyze data from databases to drive business decisions.

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About this course

Do you want to stop relying on others to extract the data you need for your reports? Knowing how to query databases directly with SQL is one of the most critical skills for any modern analyst. In this text-only course, you will transition from a complete beginner to a confident data explorer. You will learn to navigate relational databases and write structured queries to extract valuable business insights. What you'll learn: - Understand core database structures, tables, and relational schemas. - Extract and filter specific datasets using SELECT, WHERE, and logical operators. - Aggregate and summarize data with GROUP BY, HAVING, and essential mathematical functions. - Combine data from multiple sources using INNER, LEFT, RIGHT, and FULL JOINs. - Write clean and maintainable queries using modern Common Table Expressions (CTEs). - Practice sorting, limiting, and formatting query outputs for clear reporting. You will start with foundational database concepts and terminology before progressively building up to writing multi-table queries and organizing your SQL code for real-world analytical tasks. This course is designed specifically for beginners, aspiring data analysts, and business professionals who want to work with data directly without any prior programming experience. Start reading now to master the essentials of SQL and take control of your data analysis.

What you'll get

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  • Short & focused
    2h 30m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
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Name Surname
has successfully demonstrated mastery of
SQL for Data Analysis: Querying Databases for Beginners
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
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1.9 hrs
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SQL for Data Analysis: Querying Databases for Beginners
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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
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
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Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

Reviews (3)

Paul Durand FR Verified learner
★ 5 · July 18, 2026

Je ne connaissais rien aux bases de données et je suis maintenant capable d'écrire des requêtes propres pour sortir exactement les chiffres dont mon équipe a besoin. La progression est excellente, on part de SELECT et WHERE puis on enchaîne naturellement sur les jointures et les regroupements avec GROUP BY. J'ai particulièrement apprécié les exemples tirés de vraies tables de ventes, ça rend tout concret. Chaque notion est suivie d'un petit exercice qui force à pratiquer plutôt qu'à seulement lire. À la fin, filtrer et agréger des données ne me fait plus peur du tout. Une vraie porte d'entrée vers l'analyse de données, je recommande vivement.

Sirje Luik EE
★ 5 · July 13, 2026

मुझे SQL से हमेशा डर लगता था, लेकिन इस कोर्स ने बिल्कुल शुरुआत से समझाना शुरू किया और धीरे-धीरे मुश्किल क्वेरीज़ तक ले गया। हर टॉपिक के साथ एक असली डेटासेट पर प्रैक्टिस करने को मिलती है, जिससे चीज़ें सिर्फ याद नहीं बल्कि समझ में आती हैं। JOIN, GROUP BY और सबक्वेरी जैसे टॉपिक्स को इतनी आसान भाषा में समझाया गया है कि मैं खुद हैरान हूं कि अब मैं अपने डेटा से जुड़े सवालों के जवाब खुद क्वेरी लिखकर निकाल सकती हूं। हर लेसन के अंत में छोटे-छोटे एक्सरसाइज हैं जो सीखी हुई चीज़ को तुरंत टेस्ट करने में मदद करते हैं। कुल मिलाकर यह कोर्स किसी भी शुरुआती के लिए एक बेहतरीन नींव है।

আরিফ রহমান BD Verified learner
★ 4 · June 4, 2026

এই কোর্সটা SQL কুয়েরি লেখা একদম শুরু থেকে শেখায়, প্রতিটা উদাহরণ বাস্তব ডেটাসেট দিয়ে বোঝানো হয়েছে। JOIN আর GROUP BY অংশটা আমার কাছে সবচেয়ে দরকারি লেগেছে। শুধু সাবকুয়েরি অংশে আরেকটু বেশি প্র্যাকটিস এক্সারসাইজ থাকলে ভালো হতো।

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