إتقان مقابلات SQL™
Advanced SQL Interview Training

إتقان مقابلات SQL™

4.9  ·  127 reviews  ·  4,200+ students

Stop failing the SQL round. This system teaches the joins, CTEs and window functions interviewers actually test — through real business cases, not textbook exercises.

Advanced Beginner Business analytics Cte Data analyst Database Datacareerpath Intermediate
€13,95

One-time payment · Instant download · Lifetime access

⚡ Launch Price — Limited Time  ·  Join 4,200+ data professionals

⚡ Limited launch price — increases soon. One-time payment, no subscription.

✔ Instant Download ✔ Lifetime Access ✔ Secure Checkout
Secure Checkout
Instant Download
Lifetime Access
4,200+Students
120+Pages
5Resources
4.9★Rating

“Got my first data analyst role 6 weeks after finishing this. The SQL section is exactly what they test.”

Maria K. — Junior Data Analyst
Real Content Preview

See Inside Before You Buy

This is what 120+ pages of premium, structured data analytics education actually looks like — not slides, not padding, not filler.

the-data-analyst-career-system.pdf — 120+ pages
📋 Preview
Inside pages preview
📄 120+ pages 📋 13 chapters 💻 Real code examples 📊 Live dashboard walkthroughs
Sample pages from The Data Analyst Career System™
1. Welcome to the Journey 2. Role of a Data Analyst 3. Skills Roadmap 4. SQL for Data Analysis 5. Excel for Data Analysis 6. Python for Data Analysis 7. Data Visualisation with Power BI 8. Data Storytelling 9. Real-World Projects 10. Resume and LinkedIn 11. Interview Preparation 12. Job Search and Growth 13. Resources and Next Steps
Inside This Product

What You Get

Interview-Grade SQL

JOINs, subqueries, CTEs and window functions at the level companies test.

Real Business Cases

Every concept taught through revenue, retention and funnel problems.

Query Patterns

Reusable templates for the 20 most common interview question types.

Performance Thinking

Learn why a query is slow and how to explain it in an interview.

Whiteboard Ready

Practice explaining your logic out loud, the way interviews demand.

Instant Reference

Come back before every interview for a fast, structured review.

Is This For You?

Who This Is For & What You’ll Learn

Who This Is For

  • Analysts preparing for technical interviews
  • Beginners who know basic SELECT but freeze on JOINs
  • Anyone failing take-home SQL tests
  • Professionals moving into data roles

What You’ll Learn

  • Window functions that separate juniors from seniors
  • How to structure a query answer step by step
  • The exact SQL topics companies test most
  • How to debug and optimize under time pressure

نظام SQL المصمم خصيصًا لمقابلات محللي البيانات. أكثر من 100 سؤال حقيقي من المقابلات مع حلول كاملة، مشروحة بالطريقة التي يشرحها بها محلل أول — ليس فقط الإجابة، بل سبب نجاحها.

يتم اختبار SQL في أكثر من 80% من مقابلات محللي البيانات. يفشل معظم المرشحين ليس لأنهم لا يعرفون SQL، بل لأنهم يتجمدون تحت الضغط أو لا يستطيعون شرح منطقهم. هذا النظام يحل المشكلتين.

ماذا يوجد بالداخل

  • أكثر من 100 سؤال مقابلة SQL من السهل إلى الصعب — مرتبة حسب الموضوع والصعوبة
  • حلول كاملة مع شرح سطرًا بسطر
  • وظائف النافذة: ROW_NUMBER, RANK, DENSE_RANK, LAG, LEAD, NTILE
  • تعبيرات الجدول الشائعة (CTEs)، والاستعلامات الفرعية (subqueries)، والربط الذاتي (self-joins) مع حالات استخدام تجارية حقيقية
  • GROUP BY, HAVING، وأنماط التجميع الشرطي
  • وظائف التاريخ، والتلاعب بالسلاسل النصية، ومعالجة القيم الخالية (NULL)
  • أسئلة حالات العمل: تحليل الإيرادات، الاحتفاظ بالعملاء (cohort retention)، التناقص (churn)
  • استراتيجية الترميز المباشر: كيف تفكر بصوت عالٍ وتثير إعجاب المحاورين
  • ورقة الغش: الأنماط العشرين التي تظهر في 90% من مقابلات SQL

لمن هذا

أي شخص يستعد لمقابلة فنية لمحلل بيانات أو مطور ذكاء أعمال (BI developer) أو مهندس بيانات. يعمل جنبًا إلى جنب مع أي عملية تقديم وظائف — استعد في أسبوعين أو يومين حسب جدولك الزمني.

تنزيل فوري. وصول مدى الحياة. يعمل مع MySQL، PostgreSQL، BigQuery، Snowflake، وSQL Server.

Student Results

Real people, real analyst jobs

4,200+ students. Jobs at Deloitte, Amazon, McKinsey and more.

★★★★★

Got my first data analyst role 6 weeks after buying this. I had been trying to break in for 2 years. The SQL section is exactly what they test — the portfolio walkthroughs made all the difference.

MK
Maria K.
Data Analyst

“The Python scripts alone save me 4 hours every week. This guide paid for itself 100 times over.”

Sofia L. — BI Analyst at PwC
★★★★★

I tried 3 other courses. None got me to the interview stage. This is the first resource structured around what employers actually need to see — not just what is easy to teach.

JT
James T.
Junior Analyst at Amazon
★★★★★

I came from marketing with zero coding. By day 90 I had a portfolio and an offer. The salary negotiation script added €9,000 to my initial offer. Incredible value.

LB
Lena B.
Senior Analyst, Vienna
★★★★★

Had 4 interviews in one week. Got 3 offers. The SQL window functions and business case frameworks are exactly what they test at consulting firms. Nothing else comes close.

AR
Ahmed R.
junior Analyst
★★★★★

Used the Power BI templates in my first week. My manager asked how long I spent building them. I said a couple of hours — it was actually 20 minutes. Never looked more competent on day one.

PN
Priya N.
Data Analyst at SaaS company
Common Questions

Frequently Asked Questions

No. Everything starts from zero — no assumed knowledge of programming, SQL, or statistics. Each chapter builds progressively. Many of our most successful students came from marketing, finance, and humanities backgrounds with no prior coding experience.

All ebooks and guides are PDF files. Dashboard templates are .pbix (Power BI Desktop) and .xlsx (Excel). Your download link arrives by email immediately after purchase — no waiting.

Structured as a 90-day plan at 1–2 hours per day. You own it forever — no expiry, no deadline. Go at your own pace.

Yes — lifetime free updates always. When we release a new edition or add sections, we email download links to every previous purchaser automatically.

All tools are completely free: DB Browser for SQLite (SQL), Anaconda or VS Code (Python), Power BI Desktop (dashboards). No paid subscriptions needed.

30-day money-back guarantee, no questions asked. Email us your order number and we refund you in full immediately. No forms, no waiting, no hassle.

Yes. Your purchase includes a personal licence for professional use. Connect them to your company data, customise fully, and present to your team or clients.

Absolutely. The SQL module covers advanced window functions, CTEs, and query optimisation — content that trips up even experienced analysts in interviews. The career, interview prep, and salary sections are valuable at any level.

Preview
إتقان مقابلات SQL™ €13,95