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    Custom (Reusable) DAX Function

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    Omaer Khan's profile image

    Omaer Khan on 01 Mar 2017 02:06:50

    I'd like to be able to create reusable functions in DAX, instead of using the same DAX code in multiple measures.

    Example: I have some complicated DAX code, which calculates the no of working seconds between two date-times. This excludes holidays, weekends, and only counts seconds from the start of the work-day, to the end of the work-day.

    I use this DAX code a lot, for many measures which need to be in "Working Time" (working hours/minutes).

    I would love to not have to copy-paste a bunch of code into all of my measures, but to be able to create a reusable function instead.

    Comments (59)
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    Alex Eisenhart on 06 Jul 2020 00:00:37

    RE: Custom (Reusable) DAX Function

    This would be useful because I often need to do a linear interpolation in a measure with a What If Parameter, to shift between a min and max at a user-specified ratio. It's troublesome to repeat the linear interpolation formula and it would much easier if I could just create a Tween(min, max, ratio) function to leverage an abstract formula.

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    Power BI User on 05 Jul 2020 23:59:30

    RE: Custom (Reusable) DAX Function

    Would indeed be a big improvement for maintainbality and development time indeed. Im writing the same 2 formulas over and over, only difference are the ledger accounts that are being filtered.

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    Elena on 05 Jul 2020 23:57:45

    RE: Custom (Reusable) DAX Function

    It would be incredibly useful

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    Adam Estrada on 05 Jul 2020 23:51:51

    RE: Custom (Reusable) DAX Function

    Yes, please add to Power BI. This would end the long-winded DAX measures that are hard to read yet nonetheless critical for our company's reports.

    Adding it to Excel's data model would be nice, too.

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    Lesze on 05 Jul 2020 23:49:44

    RE: Custom (Reusable) DAX Function

    I agree wholeheartedly.
    Why recreate the wheel every time you need one

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    Wout O on 05 Jul 2020 23:45:43

    RE: Custom (Reusable) DAX Function

    Would be very useful and easier to do updates to a measurement (along with source control hopefully somewhere in the future)

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    ammannasm@gmail.com on 05 Jul 2020 23:45:07

    RE: Custom (Reusable) DAX Function

    Please update on this,

    This will make power bi a power full tool.

    need this ASAP

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    Jonathan on 05 Jul 2020 23:40:56

    RE: Custom (Reusable) DAX Function

    Any updates on this, Power BI Team? It's shocking that a product like this requires so much code duplication, it makes it so hard to maintain.

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    Roy Wells on 05 Jul 2020 23:34:47

    RE: Custom (Reusable) DAX Function

    Yes to this. Huge issue on large models with many similar complex measures

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    Power BI User on 05 Jul 2020 23:34:05

    RE: Custom (Reusable) DAX Function

    100% keen for this. Also would appreciate having a built-in solution for working time, was surprised to find that you have to write that yourself

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