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sheetalshettiga
Helper IV
Helper IV

cannot specify column name without aggregation

I have used Left() function to retreive left most characters 

 

LEFT(PRODUCTS[PRODUCT_ID],1)
 
But it is showing error as aggregation should be applied.hence I used below syntax
LEFT(MAX(PRODUCTS[PRODUCT_ID]),1) which shows correct result
 
Why should I apply aggregation to every function.I tried with other dax functions as well it asks for aggregation of columns whenever i use a column.Ho can I avoid using aggregations?
 
Below is the dataset
dataset.jpg
 
1 ACCEPTED SOLUTION
Fowmy
Super User
Super User

@sheetalshettiga 

When you use a measure, you cannot access a value/column directly, it has to be covered by a function. If you are adding a column in a table then it is possible to directly refer without such functions as you are in a row context. This also applies when you use iteration functions such as SUMX, MAXX, and so on.

Hope it made it clear?

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3 REPLIES 3
Fowmy
Super User
Super User

@sheetalshettiga 

When you use a measure, you cannot access a value/column directly, it has to be covered by a function. If you are adding a column in a table then it is possible to directly refer without such functions as you are in a row context. This also applies when you use iteration functions such as SUMX, MAXX, and so on.

Hope it made it clear?

________________________

If my answer was helpful, please consider Accept it as the solution to help the other members find it

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So what aggregation should I use while referring to any column in any of the dax functions ? @Fowmy 

 

@sheetalshettiga 

You can use MAX or SELECTEDVALUE

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