Behavior of GENERATE and VARIABLE in DAX

[CupidC]

Hi everyone,

I'm struggling to understand the behavior of GENERATE or VARIABLE in DAX.

I'm using the Contoso model as an example to compute the first three months' sales of a product.

First method: I declare a variable within the same measure to generate the dates for the three-month period.

Second method: I generate a table listing the dates for the first three months of sales for a product using the exact same formula as in the first method. I create a calculated table, then use the generated table as a filter argument in CALCULATE.

The two methods seem almost identical: one stores a temporary table in a variable, while the second generates an actual table in the model. However, the first method shows the expected result, whereas the second method does not.

Any insights or suggust readings on why this is happening would be greatly appreciated!

[Anonymous]

Hi @CupidC ,

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[rajendraongole1]

Hi @CupidC - Please try below measure

Sales3MO =
VAR Filterproddates3MonthsVAR =
GENERATE (
VALUES ('Product'[FirstSaleDate]),
DATESINPERIOD ('Date'[Date], MAX('Product'[FirstSaleDate]), 3, MONTH)
)
VAR Sales3M =
CALCULATE ([Sales Amount], Filterproddates3MonthsVAR)
RETURN
Sales3M

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