topic Re: Calculate: A table of multiple values was supplied where a single value was expected. in DAX Commands and Tips

Calculate: A table of multiple values was supplied where a single value was expected.

Anonymous — Wed, 22 Dec 2021 14:31:49 GMT

Hi guys,

Last year my collegue wrote a dax formula for my BI report. Unfortunately he is no longer working at my firm. Couple of days ago the datasource of my report was moved into the cloud. I already changed the location of the datasource in my report, but the Dax formula he wrote for me doesn't work since then. I tried a couple of things but it wouldn't work. The error is: A table of multiple values was supplied where a single value was expected. Can someone help me? Thank you!

The dax formula:

EmployeeKey =

CALCULATE(

DISTINCT('DimEmployee'[EmployeeKey]),

FILTER('DimEmployee',

'FactActualHoursAll'[TT_EMP_ID] = 'DimEmployee'[EmployeeId] &&

'FactActualHoursAll'[TT_date] >= 'DimEmployee'[RowEffectiveDate] &&

'FactActualHoursAll'[TT_date] <= 'DimEmployee'[RowExpirationDate]

)
)

Re: Calculate: A table of multiple values was supplied where a single value was expected.

HotChilli — Wed, 22 Dec 2021 15:37:26 GMT

Test it by replacing DISTINCT with DISTINCTCOUNT. If you get results of greater than 1, that's the problem.

Re: Calculate: A table of multiple values was supplied where a single value was expected.

PaulOlding — Wed, 22 Dec 2021 15:40:13 GMT

Hi Anonymous

It looks like you're trying to add a calculated column onto your fact table from a slowly changing dimension, DimEmployee.

The issue is DISTINCT returns a table, and tables can't be embedded in another table.

You should be using a function that returns a scalar. You could have MAX, MIN, or perhaps SELECTEDVALUE, with a default for when there's more than one row in DimEmployee that meets the filter condition.

Re: Calculate: A table of multiple values was supplied where a single value was expected.

Anonymous — Wed, 22 Dec 2021 16:07:25 GMT

Hi, I did it. I get 10 rows of number 2 and that's it. How do i fix this?

Re: Calculate: A table of multiple values was supplied where a single value was expected.

Anonymous — Wed, 22 Dec 2021 16:08:03 GMT

Hi, thanks for your response! How do i implemented this in the dax formula?

Re: Calculate: A table of multiple values was supplied where a single value was expected.

PaulOlding — Wed, 22 Dec 2021 16:21:06 GMT

So you have multiple rows in DimEmployee that meet this condition

'FactActualHoursAll'[TT_EMP_ID] = 'DimEmployee'[EmployeeId] &&

'FactActualHoursAll'[TT_date] >= 'DimEmployee'[RowEffectiveDate] &&

'FactActualHoursAll'[TT_date] <= 'DimEmployee'[RowExpirationDate]

I would try to find out why. Choose a row of the fact table from your screenshot and see which rows are matching in DimEmployee.

You mentioned the datasource has moved. Just throwing out ideas but, as your condition includes dates, perhaps there's something different about the date formats in the new datasource?

Re: Calculate: A table of multiple values was supplied where a single value was expected.

VahidDM — Wed, 22 Dec 2021 23:48:29 GMT

Hi Anonymous

Can you post sample data as text and expected output?

please see this post regarding How to Get Your Question Answered Quickly:
https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.
4. Relation between your tables

Appreciate your Kudos!!
LinkedIn:www.linkedin.com/in/vahid-dm/

Re: Calculate: A table of multiple values was supplied where a single value was expected.

Anonymous — Tue, 28 Dec 2021 01:21:31 GMT

Hi Anonymous ,

You can try to add all() or allselect() to the function

EmployeeKey = CALCULATE ( DISTINCT ( 'DimEmployee'[EmployeeKey] ), FILTER ( ALLSELECTED ( 'DimEmployee' ), 'FactActualHoursAll'[TT_EMP_ID] = 'DimEmployee'[EmployeeId] && 'FactActualHoursAll'[TT_date] >= 'DimEmployee'[RowEffectiveDate] && 'FactActualHoursAll'[TT_date] <= 'DimEmployee'[RowExpirationDate] ) )

Best Regards,

Liu Yang

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