How To Get Data From Multiple Tables inside one Column?

[dub]

Hello everyone,

I am trying to solve this for a while now. If anyone can help i will be very much greatful.

I need to get data from multiple tables inside another table's column.

I tried LOOKUPVALUE() but it can take data only from one table. It somehow needs a loop which will dynamicaly choose a table and column to look at. (The column name is the same for all tables).

[Greg_Deckler]

Need more details on this: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

CONCATENATE?

[dub]

Thank you Smoupre,

I tried thisColumn = CONCATENATE() which returns a string (in my case a table and column name) - f.ex. 'Table[Number]' - but what i need is a value.

SUM('thisColumn') would do the work, but it returns an error "The function SUM cannot work with value of type String".

Is there any function or DAX thing to get the expression of a String? Or any other Idea?

Thank you for your help.

Dusan

[Greg_Deckler]

VALUE will turn a string into a numeric value if possible.

https://msdn.microsoft.com/en-us/library/ee634584.aspx

[dub]

MergedData = CONCATENATE(CONCATENATE("'";CONCATENATE([TableName];"'"));"[Number]")

This is my formula.

'TableName' is a column from current table containg names of my desired tables. Let's say table names are Table1, Table2,...Table10.

Basically, I need a number from the columns Table1[Number] and Table2[Number] ... and Table10[Number] - (these tables have only 1 row)

My formula returns a string 'Table1'[Number], 'Table2'[Number] ... 'Table10'[Number]'

But the formula

VALUE(CONCATENATE(CONCATENATE("'";CONCATENATE([Table1];"'"));"[Number]"))

Returns an error "Cannot convert value '''Table1'[Number] of type Text to type Number."

Can you understand? Or maybe i should create a pbi example file?

Thank you very much for your time.

Dusan

[v-qiuyu-msft]

Hi @dub,

From your description, each table has [Number] column which has one value, you want to concatenate those column values in one table, right? 

In your scenario, assume Table2, Table3 and Table4 have Number column, you can try to create a calculated column in the table Table2 use DAX below: 

ConcatenateCol = CONCATENATE(CONCATENATE('Table2'[Number],CONCATENATE(",",MAX('Table3'[Number]))),CONCATENATE(",",MAX('Table4'[Number])))

Please take a look at attached pbix file. 

Best Regards,
Qiuyun Yu 

[dub · Accepted solution]

Hi @v-qiuyu-msft, @Greg_Deckler

Thank you for the answers!

The problem is that i have much more tables involved. But i managed to get what i need by appending all the one row tables into one big table, and then use LOOKUPVALUE to pull the desired column values based on matching Ids.

Thank you both for your contribution.

BR

Dusan