In this tutorial, we’ll explore the JOIN prefix in Qlik — how it works, the different join types, and when to use them.
You’ll learn how to extend tables with new fields, understand natural joins, and apply Left, Right, Inner, and Outer Joins effectively.
We’ll also cover Cross Joins (Cartesian products) and explain how JOIN differs from KEEP.
By the end, you’ll know how to apply the right join type in Qlik for your data modeling needs.
🎬 00:04 – Introduction: What is the JOIN Prefix in Qlik
📌 00:08 – How JOIN Works: Extending Tables with Common Fields
📊 00:20 – Natural Join & Common Field Alignment
🔄 00:24 – The Four Join Types in Qlik
⬅️ 00:26 – Left Join Explained with Example (Changes + Status)
➡️ 00:43 – Right Join: Keeping All Rows from Incoming Table
♻️ 01:03 – Inner Join: Only Matching Records from Both Tables
🌐 01:21 – Outer Join: Keeping All Records + Nulls for Missing
✖️ 01:30 – Cross Join (Cartesian Product) When No Common Fields
📋 01:55 – Join Outcome: Always a Single Merged Table
✅ 02:03 – Conclusion & Key Takeaways
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