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Anonymous
Not applicable

## How the Filter definition of the metric can affect the final result.

Let's assume that I have the Products table in my model defined like this:

 ProductID UnitPrice UnitsInStock Discontinued 1 10 50 TRUE 2 15 30 FALSE 3 20 20 TRUE 4 25 10 TRUE 5 5 15 FALSE

I have created two metrics :

Value1  =

CALCULATE ( SUMX ( Products, Products[UnitPrice] * Products[UnitsInStock] ), FILTER ( Products, Products[Discontinued] = TRUE ) )

Value2 =

CALCULATE ( SUMX ( Products, Products[UnitPrice] * Products[UnitsInStock] ), Products[Discontinued] = TRUE )

The only difference is the definition of the filter. I have evaluated the results in Power Desktop but I do not see any difference. This leads to my question: How could this definition affect the final result of the metric or when might this occur?

1 ACCEPTED SOLUTION
Super User

The two measures are essentially identical, both are calculating the result for products which are discontinued.

The definition for value2 is rewritten internally to be

``````Value2 =
CALCULATE (
SUMX ( Products, Products[UnitPrice] * Products[UnitsInStock] ),
FILTER ( ALL ( Products[Discontinued] ), Products[Discontinued] = TRUE )
)
``````

The form of CALCULATE where you can specify a predicate as a filter rather than a table is merely syntax sugar, to make the code easier to read and write.

Super User

The two measures are essentially identical, both are calculating the result for products which are discontinued.

The definition for value2 is rewritten internally to be

``````Value2 =
CALCULATE (
SUMX ( Products, Products[UnitPrice] * Products[UnitsInStock] ),
FILTER ( ALL ( Products[Discontinued] ), Products[Discontinued] = TRUE )
)
``````

The form of CALCULATE where you can specify a predicate as a filter rather than a table is merely syntax sugar, to make the code easier to read and write.

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