Issue in fn!union() to return unique values. Is there any other function available?

Certified Associate Developer

Hi Team,

Got confused while doing some calculations in Appain Expression rule. Added input and output below. i have tried fn!union() function but it was failing sine input was only one array.

Code: fn!union({ 1, 2, 2, 1, 3, 1, null, null }, {})

Sample i/p -> { 1, 2, 2, 1, 3, 1, null, null}

Expected o/p -> { 1, 2, 3} 

Current Appian Design:

Thanks and Regards,

Vigneshkumar Radhakrishnan

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  • The UNIQUE function in Excel returns a list of unique values from a range or array. It works with any data type: text, numbers, dates, times, etc.

    The function is categorized under Dynamic Arrays functions. The result is a dynamic array that automatically spills into the neighboring cells vertically or horizontally.

    The syntax of the Excel UNIQUE function is as follows:

    UNIQUE(array, [by_col], [exactly_once])

    Where:

    Array (required) - the range or array from which to return unique values.

    By_col (optional) - a logical value indicating how to compare data:

    TRUE - compares data across columns.
    FALSE or omitted (default) - compares data across rows.

    Exactly_once (optional) - a logical value that defines what values are considered unique:

    TRUE - returns values that occur only once, which is the database notion of unique.
    FALSE or omitted (default) - returns all distinct (different) values in the range or array.

  • 0
    Certified Lead Developer
    in reply to atonal3106

    How does your post help the TO in Appian?

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