Power BI has many great functions that make this Microsoft product one of the most desired tools for organizing and visualizing various sets of data.

Using the Power BI functions between tables is very easy

  • Power BI can be used to create interactive data visualizations, and build dashboards and reports for data analysis and decision making

  • The simplest way to add a column from another table is to write the necessary formulas.

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However, many users can’t understand how to use some of these fine options. This is because Power BI is not so intuitive in some cases.

In this article, we will show you how to add a column from another table.

This issue was described by a user on the official Microsoft forum:

So, the OP wants to use the number of hours as a parameter but didn’t figure out how to do that.

I have 2 tables: Table [A] and TimeZone. How do I add another colum in [A] that will use a column a vlaue in the TimeZone table without using a Merge Query? The Timezone table only contains one value which is the number of hours to offset. Ideally I would like to use this value as a parameter but have not figured out how to do it.

If you find yourself in the same situation, here are some solutions that will work for you.

Steps to add a column from another table in Power BI

1. Add a column from another table when there is a relationship between tables

Add a calculated column on Table [A] using the syntax: New Column = RELATED(TimeZone[Value])

2. Add a column from another table when there is not a relationship between tables

If you don’t use relationship, here is an alternative:

New Column = var JoinCol = ‘TableA’[ID]var NewCol = CALCULATE(MAX(‘TimeZone’[Value]),’TimeZone’[ID]=JoinCol)return NewCol

3. Add a column using Power Query

  • Select Edit Queries. This will open a new window in Power BI.
  • Go to the Add Column tab.
  • Add an Index Column and name it Index.
  • Add a Custom Column with this expression: Table2[ColumnName]{[Index]}

Conclusion

The solutions seem a little bit technical, especially the first two. Still, the option of adding a column from another table is for advanced users.

Fortunately, there is more than one way to approach this issue, each one being adapted to the needs of every user.

Did you find our solutions useful? Do let us know in the comments section below!

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