IsEmpty with a LookUp on a CDS Data Source always returns false

[xyd]

If I use IsEmpty to test whehter lookup is returning any record, it always returns false. But with the same data source if I use IsBlank then it work as expected...

If(

IsEmpty(LookUp([@'CDS DS'], some filters)),

//do somthing, it will never get here...

)

If(

IsBlank(LookUp([@'CDS DS'], some filters)),

//do somthing, it will work as expected

)

I thought IsEmpty is the one to be used with a table and IsBlank with  a string...

what have I missed here? Why IsEmpty is always returning false...?

[VijayTailor]

Hi @xyd ,

IsEmpty only with String like no character, 

For More Information please see the below url.
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-isblank-isempty

Hope this will help you to understand more about IsBlank or IsEmpty Function behavior.

Thanks,
Vijay

Please click "Accept as Solution" if my post answered your question so that others may find it more quickly. If you found this post helpful consider giving it a "Thumbs Up."-Vijay

[xyd · Accepted solution]

Hey @VijayTailor 

Had another closer look at the reference on IsBlank, IsEmtpy and found

" the IsBlank and Coalesce functions test for both blank values or empty strings." ...

"In the context of the IsEmpty function, empty is specific to tables that contain no records."

So it all making sense now.

coz I am using LookUp and that will return a record I guess that doesn't really qualify as a table.

Thanks anyways.

Xun