# sum by customer

• ### Question

• Hello. Why/how does this work? Used it calculate sum by group.

=CALCULATE([total sales],ALLEXCEPT(Table1,Table1[Customer]))

Friday, December 23, 2016 9:39 PM

• Hi, take a look at Marco Russo's great write-up on using CALCULATE with ALL, ALLEXCEPT, and VALUES. The examples in his blog should help you break this down.

http://sqlblog.com/blogs/marco_russo/archive/2010/04/05/all-allexcept-and-values-in-dax.aspx

Essentially your function will evaluate the expression (due to the CALCULATE function) with a filter on all columns in Table1 except the Customer column (due to the ALLEXCEPT function).

Thanks,
Sam Lester (MSFT)

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Saturday, December 24, 2016 8:28 AM

### All replies

• Hi, take a look at Marco Russo's great write-up on using CALCULATE with ALL, ALLEXCEPT, and VALUES. The examples in his blog should help you break this down.

http://sqlblog.com/blogs/marco_russo/archive/2010/04/05/all-allexcept-and-values-in-dax.aspx

Essentially your function will evaluate the expression (due to the CALCULATE function) with a filter on all columns in Table1 except the Customer column (due to the ALLEXCEPT function).

Thanks,
Sam Lester (MSFT)

This posting is provided "AS IS" with no warranties, and confers no rights. Please remember to click "Mark as Answer" and "Vote as Helpful" on posts that help you. This can be beneficial to other community members reading the thread.

Saturday, December 24, 2016 8:28 AM
• Hi AlexMartini,

In the formula, you use the ALLEXCEPT to filter the data. The ALLEXCEPT function is used to remove all the filter except Customer column. So it will calculate the total sales in each customer.

Best Regards,
Angelia

MSDN Community Support
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Monday, December 26, 2016 3:22 AM
• Thanks Sam, but if you put customers in row labels, that is a filter right? If you are taking the filter off of everything except for customer, wouldn't it just sum up ALL of the customers and the specific groups?
Monday, December 26, 2016 8:14 AM