topic Re: lookup values from another table in DAX Commands and Tips

lookup values from another table

Anonymous — Thu, 22 Dec 2022 10:27:52 GMT

Hi, experts, I have two tables, dimension table and fact table, I created a filter use column from dimension table, but fact table may not exist some values in dimension table, and I need to make sure all the values from the fiters selected has relevant data, do you have any ideas?

My idea is that creat a measure in the dimension table, when the value from fact table exist in dimension table, then return 1, else 0, and apply this measure to the filter, but the measure crteated is not work.

here is the sample data and expected result:

dimsention table

region

fact table

region	data
A	adaf
C	fadfa

expected result:

region	measure
A	1
B	0
C	1

I created mesure like this:

measure=

VAR _fact=MAX('fact'[region])

VAR _dim=MAX('dim'[region])

RETURN IF(_fact=_dim,1,0)

but the measure did not work

do you know how to how to make this measure correct or any other ideas on make the slicer show only relevant data?

Re: lookup values from another table

Anonymous — Thu, 22 Dec 2022 10:39:54 GMT

Hi Anonymous ,

Please find the below solution.

Column = IF(Dim[Region]=RELATED('Fact'[REgion]),1,0)

Best Regards,
Shreya

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Re: lookup values from another table

Anonymous — Thu, 22 Dec 2022 13:47:02 GMT

I did not get the result use this column, there is aloway an error with RELATED function,
maybe because the data is imported?

Re: lookup values from another table

Anonymous — Fri, 23 Dec 2022 06:09:12 GMT

Hi Anonymous ,

According to your description, here are my steps you can follow as a solution.

(1) My test data is the same as yours.

(2) We can create a measure.

Measure = IF(LOOKUPVALUE('dimsention table'[region],'fact table'[region],MAX('dimsention table'[region])) ==BLANK(),0,1)

(3) Then the result is as follows.

Best Regards,

Neeko Tang

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Re: lookup values from another table

Anonymous — Fri, 23 Dec 2022 09:29:28 GMT

Thanks, the sample data maybe too simple and some problems might hidden.

If I add a row of data in fact table {C, aaa}, and the required relationship is 1-n, there would be an error, and I tried many times with this method

here is the fact table and relationship, and relevant error:

fact table added one record:

relationship:

error:

Re: lookup values from another table

Anonymous — Mon, 26 Dec 2022 01:26:01 GMT

Hi Anonymous ,

(1) We can create a calculated column.

Column = IF('Fact Table'[region]=RELATED('Dimension table'[region]),1,0)

(2)We can create a measure.

Measure = IF(SELECTEDVALUE('Fact Table'[Column])==BLANK(),0,1)

(3) Then the result is as follows.

Best Regards,

Neeko Tang

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Re: lookup values from another table

Anonymous — Tue, 27 Dec 2022 02:11:20 GMT

Thanks for your explanation, did you get an error when creating column? Actually there is always an error when I create a column like that, it says parameter is not the correct type

Re: lookup values from another table

Anonymous — Tue, 27 Dec 2022 02:16:19 GMT

Hi Anonymous ,

You should create calculated columns and measures on the fact table, as shown in my picture.

Best Regards,

Neeko Tang

If this post helps, then please consider Accept it as the solution  to help the other members find it more quickly.