Hi @gmurnock ,
Do you want to search your Gallery items based on the 'Created By' column in the Search function?
Currently, within PowerApps, when using Search function to filter table records, we could only specify Text type column as search column. We could not specify complex type column (e.g. Choice, Person, LookUp type column, ...) as Search column within it.
Note: The 'Created By' column is actually a Person type column.
As an alternative solution, I think the AddColumns function could achieve your needs. I have made a test on my side, please take a try with the following workaround:
Set the Items property of the Gallery to following:
Search(
AddColumns('YourSPList', "CreateByUser", 'Created By'.DisplayName),
TextSearchBox1.Text,
"CreatedByUser",
"OtherTextColumn1",
"OtherTextColumn2",
...
)
Note: Please also set the "Data row limits for Non-delegable" queries option to maximum value -- 2000 within Advanced settings of App settings of your app.
Please consider take a try with above solution, then check if the issue is solved.
Best regards,