MySQL CROSS JOIN Explained (Real Example: Booking Slots + Product Combinations) #shorts

Ever wondered how apps generate all possible combinations automatically?
In this video, we explore MySQL CROSS JOIN with two powerful real-world examples:
✅ Product variants (shirts × colors)
✅ Booking system (auto-generate dates & time slots)

We start with a simple dataset and show how CROSS JOIN creates every combination — then level up by generating:
📅 Dates from 1 Jan 2026 to 31 Jan 2026
⏰ Time slots every 2 hours (8AM – 6PM)

Using recursive queries, we automate everything and combine them to create:
👉 186 booking slots instantly

We also cover:
* When to use CROSS JOIN
* How to filter results using `WHERE`
* Real-world use cases (booking systems, simulations, test data)

💡 Perfect for beginners and developers building real applications.
📌 Try it yourself
You can modify:
* Date range
* Time intervals
* Business rules (exclude weekends, holidays, etc.)

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Видео MySQL CROSS JOIN Explained (Real Example: Booking Slots + Product Combinations) #shorts канала Ark Coding