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Select Unique Items

Is there a way to select unique items from an array?

Community Support
Community Support

Hi @craig-martin,


Could you please explain a bit for the unique items here? If you mean an item filtered with some special condition, then I think the filter Array Action would work with your scenario.

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Personally I think the selection from Array is not available.

The data being queried are not pre-loaded when configure the flow, so there is no data could be chosen from the array, 

Further, the data which would be loaded in array might change, the pre-configured item may not work.

what we could do when configure the Flow is working with conditions, or the available OData Query option, such as fiter query, orderby, or select query (in SQLServer).

If I misunderstand something, please let me know.



Community Support Team _ Michael Shao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

if an input is an array with items a,a,b,c,c then I'm wondering if an Action in Flow can output just the unique items, so a,b,c.

Hey @craig-martin, did you ever figure out a way to filter just unique items? 

Unfortunately I did not.

Regular Visitor


Use the built-in union or intersection functions. They are both fast and require few steps:



See here for more details:

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