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## Can this DAX measure for calculating relative dates be simplified?

Below is some DAX code I've written to calucalte a relative date. The user selects a date from a ReferenceDate calendar, this is separate from all other tables. [Max Quarter] calculates the reference date we're looking at. [IRR Date] then calculated relative dates based on the [Max Quarter] and a table called 'Trailing IRR' (screen shot attached). Have I over complicated the [IRR Date] measure?? Is there anything I can do to improve these measures? Let me know if I haven't explained it well.

``````Max Quarter =
SELECTEDVALUE(
ReferenceDate[Quarter end date],
CALCULATE(
MAX('Calendar'[Quarter end date]),
ALLSELECTED('Calendar')))``````
``````IRR Date =
VAR TrailingDate =
IF(
SELECTEDVALUE('Trailing IRR'[Time Period])="3 Month",
CALCULATE(
MAX('Calendar'[Date]),
PREVIOUSQUARTER(
CALCULATETABLE(
VALUES('Calendar'[Date]),
FILTER(ALL('Calendar'),
'Calendar'[Date]=[Max Quarter])))),
DATE(
YEAR([Max Quarter])-SELECTEDVALUE('Trailing IRR'[Year]),
MONTH([Max Quarter]),
DAY([Max Quarter])))

RETURN
IF(
TrailingDate=[Max Quarter],
BLANK(),
TrailingDate)``````

1 ACCEPTED SOLUTION
Resolver II

Great! Don't forget to mark it as resolved if it helps, or let me know if it doesn't

Pi

3 REPLIES 3
Resolver II

Great! Don't forget to mark it as resolved if it helps, or let me know if it doesn't

Pi

Resolver II

You could take advantage of the "EDATE" function which subtracts a specified number of months from a date.

In my example below, I have added another field to your lookup table which is the number of months difference as implied by the selected time period:

You can use this single selected value as a parameter within the EDATE() function, removing the need for a long if statement:

Relative Date = EDATE([Selected Date],SELECTEDVALUE('year ref'[MonthDiff]))

Where [Selected Date] is the date you wish to perform comparison on and 'year ref' is the table with the selection value.

HTH

Pi

Thank you for this suggestion! I'll give it a go, I definitely think removing the IF statement will help

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