Filter Table where Look Up Column Blank

[Sandie]

Table "Requests" and a Lookup Column "Assigned" (looks up users).  Unassigned = no user selected in lookup column

I can accurately count how many unassigned requests I have using:

CountIf(
    Requests,
    IsBlank(Assigned)
)

  
However, if I try to filter a Data Tables "Items" field I don't get any items in my table:

Filter(
    Requests,
    IsBlank(Assigned)
)

What am I overlooking?

Environment: Teams: Power Apps & Dataverse

[ganeshsanap]

@Sandie Try using these:

Filter(
    Requests,
    Assigned = ""
)

OR

Filter(
    Requests,
    Assigned = Blank()
)

 References:

1. Filtered Lookup Column - filtered value will not be saved 
2. LookUp Field Blank Check 

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[Sandie]

Thanks for your reply @ganeshsanap, unfortunately neither works

Assigned = "" gives an error indicator under the equals sign (Invalid argument type)
Assigned = Blank() does not error but does not return any items.

EDIT: Both actually give the same error!

I'll keep reading through the other posts you linked to see if I can find something more.

[Drrickryp]

@Sandie 

Try

CountIf(
    Requests,
    IsBlank(Assigned.Value)
)

[Sandie]

Thanks @Drrickryp unfortunately that doesn't work either.  "Assigned" does not have a "Value" property.

One of the confusing things about my situation is that the CountIf function I provided works as expected, but the same expression in the Filter function does not.

[Sandie]

Bump

[BlessedCobba]

Hi Sandie,

have you tried pulling the data into a collection and running the same filters over the collection to populate the table?
i know its a workaround but my help with troubleshooting the issue directly for the source

[Drrickryp · Accepted solution]

@Sandie 

Trying again

Filter(
        AddColumns(
                    Requests,"assgnd",Assigned.XXXS //use intellisense to identify value
         ),IsBlank(
                    assgnd
           )
 )