diff --git a/lib/data_layer.ex b/lib/data_layer.ex
index 25c856a..e90d3c8 100644
--- a/lib/data_layer.ex
+++ b/lib/data_layer.ex
@@ -1115,7 +1115,7 @@ defmodule AshPostgres.DataLayer do
 
     {:ok,
      from(row in query,
-       select: struct(row, ^select)
+       select: struct(row, ^Enum.uniq(select))
      )}
   end