Скачать или смотреть Day 8 - 14 Days SQL-PRO CHALLENGE| Online Food Delivery

🎉 Welcome to Day 8 – SQL CTEs (Common Table Expressions) Special – of the 14‑Day Intermediate to Pro SQL Challenge by DataPencil! 🎉

💻 Today’s Focus:
We’re mastering CTEs — the cleanest way to break a long, confusing SQL into small, readable steps.
You’ll learn how to:

Define a CTE with WITH cte_name AS (...)

Chain multiple CTEs to build logic step‑by‑step

Reuse a CTE within the same query (without rewriting subqueries)

Write beginner-friendly non‑recursive CTEs and get a peek at recursive CTEs for hierarchies & sequences

📦 Dataset Used:
We’re continuing with our Online Food Delivery schema featuring 5 core tables:
customers, restaurants, orders, order_details, and menu_item

🎓 About this Challenge:
This is Day 8 of the 14‑Day Intermediate to Pro SQL Challenge
✅ Real‑World Business Scenarios
✅ Resume‑Ready Portfolio Queries
✅ Certificate on Completion
🎯 Complete all 14 days to earn your official certificate from DataPencil – ISO Certified & MSME Registered

⚠️ Disclaimer:
The dataset used in this video is completely fictional and created only for educational purposes.
No real names, emails, phone numbers, or sensitive information are used.

📲 Connect with Me (Kalyani – Founder, DataPencil):
🌐 Website: www.datapencil.org
📸 Instagram: @datapencil
🐦 X (Twitter): Kalyani Bhatnagar
💼 LinkedIn: @Kalyani Bhatnagar | @DataPencil
📱 WhatsApp: 7897761209

✅ Join our WhatsApp Group to:
• Submit your daily tasks & screenshots
• Get instant doubt resolution
• Receive PDFs & daily query guides directly

📢 Note:
This batch’s group is now closed.
📩 Message “Pro Challenge 2” on WhatsApp at 7897761209 to join the next slot.

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