Use IsBlank and Trim to check for any empty or whitespace strings.
IsBlank(Trim(Column2))
Trim will remove any whitespace and IsBlank will return a true/false if the string is empty or not after the trim.
IsBlank
Trim
UPDATE: Check only for IsBlank where Column2 is evaluated, the way you wrote it it's checking if Column2 = bool which will have a type mismatch since it's checking a string vs a bool, change to this:
ClearCollect(Test,LookUp(Table1,Column1=DataCardValue6.Text && IsBlank(Trim(Column2))))
Answer from kshkarin on Stack OverflowVideos
Hello,
so the exact question is:
How to display only filtered records in the gallery, filtered by condition that one of the collumns is empty (has no value in it).
So let's imagine I have a Sharepoint list 'X', and in it i have many collumns and one of them is called 'C'. In the powerapps I want to have a vertical gallery, which would only show the records from the list X that have the collumn C empty.
If I use the IsBlank() or other conditions I get delegation warning, what is the correct way to do it, or what is the workaround?
I even made a view of the sharepoint list, but views apparently can't be used inside powerapps.
Any pro tips? ;)