Build a column based on a date filter from another table

[FrankMcQ]

Hi

I have a table of milestones:

Year      Start Date       End Date          Q1                     Q2                      Q3                       Q4

2018     01/10/2017     31/09/2018      01/10/2017       01/01/2018        01/04/2018         01/07/2018

2019     01/10/2018     31/09/2019      01/10/2018       01/01/2019        01/04/2019         01/07/2019

....

I also have a table of invoices:

Date                  Amount

01/11/2017       20.87

01/12/2017       32.31

...

I wanted to add columns to the financial milestones table to sum all of the invoices in that period... I'm using the following instruction:

Invoices in Q1 = CALCULATE(SUMX(FILTER('Invoices', 
AND('Invoices'[Invoice Date] >= 'Milestones'[Start Date], 'Invoices'[Invoice Date] < 'Milestones'[Q1])),  
'Invoices'[Amount]))

However I keep getting the error: 

Column 'Start Date', 'Q1' cannot be found or may not be used in this expression.

I'm struggling to understand why it can't find the columns - is it because I'm operating on the invoices table in the filter?

I guess I'm doing this incorrectly, any help would be gratefully received!

[az38]

Hi @FrankMcQ 

try

Invoices in Q1 = CALCULATE(SUMX(FILTER('Invoices', 
AND('Invoices'[Invoice Date] >= SELECTEDVALUE('Milestones'[Start Date]), 'Invoices'[Invoice Date] < SELECTEDVALUE('Milestones'[Q1]))),  
'Invoices'[Amount]))

i think the problem occurs because DAX doesnt understand what exactly Milestone rows should be compared inside Invoices aggregations

do not hesitate to give a kudo to useful posts and mark solutions as solution

[FrankMcQ · Accepted solution]

Perfect, Many thanks!

[amitchandak]

These calculations will for the column, not for the measure. For measure is expects a single value. This means you have to take a min or max of another table.

Not sure why you creating a table like this you can use a calendar in powerbi to do this is a much better manner.

https://radacad.com/creating-calendar-table-in-power-bi-using-dax-functions

https://docs.microsoft.com/en-us/dax/time-intelligence-functions-dax

https://www.sqlbi.com/articles/time-intelligence-in-power-bi-desktop/