What is merge queries during transformation?

< 1 min read

Merge Queries in Power Query means combining two tables based on a common column or key.
It’s like performing a SQL JOIN directly in Power Query.
In my project, we merged Customer table with Orders table using CustomerID.
We selected only required columns from the lookup table to keep the dataset clean.
Different join types are supported: Left, Right, Inner, Full Outer, etc.
Merged columns can be expanded to include related fields in the main table.
It helps enrich datasets without altering source systems.
Applied before loading ensures all related data is available for reporting.
Reduces need for multiple lookups in Power BI visuals.
So merging queries integrates related tables to create analysis-ready datasets.

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