Add example requested in palewire#168.

docs/index.rst

@@ -520,6 +520,39 @@ Now you can run that subclass directly rather than via a manager. The only diffe
             # Then save it.
             c.save()
 
+For example, if you wish to return a QuerySet of the models imported into the database, you could do the following:
+
+.. code-block:: python
+    from django.db import models
+    from postgres_copy import CopyMapping, CopyQuerySet
+
+
+    class ResultsCopyMapping(CopyMapping):
+      def insert_suffix(self) -> str:
+        """Add `RETURNING` sql clause to get newly created/updated ids."""
+        suffix = super().insert_suffix()
+        suffix = suffix.split(';')[0] + ' RETURNING id;'
+        return suffix
+
+      def post_insert(self, cursor) -> None:
+        """Extend to store results from `RETURNING` clause."""
+        self.obj_ids = [r[0] for r in cursor.fetchall()]
+
+
+    class ResultsCopyQuerySet(CopyQuerySet):
+      def from_csv(self, csv_path_or_obj, mapping=None, **kwargs):
+        mapping = ResultsCopyMapping(self.model, csv_path_or_obj, mapping=None, **kwargs)
+        count = mapping.save(silent=True)
+        objs = self.model.objects.filter(id__in=mapping.obj_ids)
+        return objs, count
+
+
+    class Person(models.Model):
+        name = models.CharField(max_length=500)
+        number = models.IntegerField()
+        source_csv = models.CharField(max_length=500)
+        objects = ResultsCopyQuerySet.as_manager()
+
 
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