lib/sequel/plugins/validation_helpers.rb in sequel-4.15.0 vs lib/sequel/plugins/validation_helpers.rb in sequel-4.16.0

@@ -239,10 +239,13 @@
               vals = arr.map{|x| send(x)}
               next if vals.any?{|v| v.nil?}
               ds.where(arr.zip(vals))
             end
             ds = yield(ds) if block_given?
-            ds = ds.exclude(pk_hash) unless new?
+            unless new?
+              h = ds.joined_dataset? ? qualified_pk_hash : pk_hash
+              ds = ds.exclude(h)
+            end
             errors.add(a, message) unless ds.count == 0
           end
         end
         
         private