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Fixed #24793 -- Unified temporal difference support.

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Simon Charette 2016-01-19 20:43:41 -05:00
parent 31098e3288
commit 766afc22a1
14 changed files with 135 additions and 2 deletions
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docs/releases/1.10.txt
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@ -201,7 +201,7 @@ CSRF
Database backends
~~~~~~~~~~~~~~~~~
* ...
* Temporal data subtraction was unified on all backends.
Email
~~~~~
@ -398,6 +398,13 @@ Database backend API
from the database are now converted to ``float`` to make it easier to combine
them with values used by the GIS libraries.
* In order to enable temporal subtraction you must set the
``supports_temporal_subtraction`` database feature flag to ``True`` and
implement the ``DatabaseOperations.subtract_temporals()`` method. This
method should return the SQL and parameters required to compute the
difference in microseconds between the ``lhs`` and ``rhs`` arguments in the
datatype used to store :class:`~django.db.models.DurationField`.
``select_related()`` prohibits non-relational fields for nested relations
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