How to detect changes between two tables

Описание: Ever wondered which database records changed overnight? 🕵️‍♂️ Finding the differences between two tables is a classic data task!

Whether you have daily snapshots like `products_yesterday` and `products_today`, this guide shows you two powerful SQL methods to spot every change.

1️⃣ *EXCEPT / MINUS:* The quick and easy way to find rows that are completely new or have been deleted. Simple, but has its limits when it comes to updated records.

2️⃣ *LEFT JOIN:* The master key! By joining tables on a unique ID, you can pinpoint not just new and deleted rows, but also the specific records that were updated.

Swipe through to see the code snippets and learn when to use each method!

Which method do you prefer for table comparisons? Let me know in the comments! 👇

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