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Refs #31956 -- Doc'd consequences of disabling psycopg2's JSONB typecaster. 

Follow up to 0be51d2226.
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Mariusz Felisiak 2020-09-10 11:00:13 +02:00 committed by GitHub
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@ -72,7 +72,10 @@ Bugfixes
* Fixed a ``QuerySet.order_by()`` crash on PostgreSQL when ordering and
grouping by :class:`~django.db.models.JSONField` with a custom
:attr:`~django.db.models.JSONField.decoder` (:ticket:`31956`).
:attr:`~django.db.models.JSONField.decoder` (:ticket:`31956`). As a
consequence, fetching a ``JSONField`` with raw SQL now returns a string
instead of pre-loaded data. You will need to explicitly call ``json.loads()``
in such cases.
* Fixed a ``QuerySet.delete()`` crash on MySQL, following a performance
regression in Django 3.1 on MariaDB 10.3.2+, when filtering against an