MAX, IF, SELECTEDVALUE and filtering using related table

Hi ArvindSh,

If you format your DAX so it's more readable, it's clearer what the issue is. As mentioned, there is a functional difference between the two measures. I'm not sure why you're asking to ignore that. That is the entire reason the two give different results.

OKMeasure = 
IF (
    SELECTEDVALUE ( ApplyDiscount[ApplyDiscount] ) == "Yes", 
    MAX ( 
        SUM ( Sales[Sales Amount] ),
        100
    ),
    SUM ( Sales[Total Product Cost] )
)

Here with OKMeasure, since you've selected "No" for ApplyDiscount, it just returns the sum of Total Product Cost.

FaultyMeasure = 
MAX (
    IF (
        SELECTEDVALUE ( ApplyDiscount[ApplyDiscount] ) == "Yes", 
        SUM ( Sales[Total Product Cost] ), 
        100
    ), 
    SUM ( Sales[Sales Amount] )
)

Here with FaultyMeasure, since you've selected "No" for ApplyDiscount and filtered for only Bikes, the logic on the other three categories is as follows:

FaultyMeasure = 
MAX (
    100, -- ApplyDiscount is "No", therefore IF function returns the second value, ie 100
    BLANK() -- you've filtered for Bikes so sum of Sales Amount is blank
)

The max of 100 and BLANK() is 100. Therefore for the other three product categories, the measure returns 100.

Please let me know if this was unclear!

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