Fixed #22316 -- Added time filters to TimeField on SQLite.

This was implemented for non-SQLite backends in 1.7 (as a
side effect of #16187).

docs/ref/models/querysets.txt

@@ -2606,23 +2606,30 @@ in the database <database-time-zone-definitions>`.
 hour
 ~~~~
 
-For datetime fields, an exact hour match. Allows chaining additional field
-lookups. Takes an integer between 0 and 23.
+For datetime and time fields, an exact hour match. Allows chaining additional
+field lookups. Takes an integer between 0 and 23.
 
 Example::
 
     Event.objects.filter(timestamp__hour=23)
+    Event.objects.filter(time__hour=5)
     Event.objects.filter(timestamp__hour__gte=12)
 
 SQL equivalent::
 
     SELECT ... WHERE EXTRACT('hour' FROM timestamp) = '23';
+    SELECT ... WHERE EXTRACT('hour' FROM time) = '5';
     SELECT ... WHERE EXTRACT('hour' FROM timestamp) >= '12';
 
 (The exact SQL syntax varies for each database engine.)
 
-When :setting:`USE_TZ` is ``True``, values are converted to the current time
-zone before filtering.
+For datetime fields, when :setting:`USE_TZ` is ``True``, values are converted
+to the current time zone before filtering.
+
+.. versionchanged:: 1.9
+
+    Added support for :class:`~django.db.models.TimeField` on SQLite (other
+    databases supported it as of 1.7).
 
 .. versionchanged:: 1.9
 
@@ -2633,23 +2640,30 @@ zone before filtering.
 minute
 ~~~~~~
 
-For datetime fields, an exact minute match. Allows chaining additional field
-lookups. Takes an integer between 0 and 59.
+For datetime and time fields, an exact minute match. Allows chaining additional
+field lookups. Takes an integer between 0 and 59.
 
 Example::
 
     Event.objects.filter(timestamp__minute=29)
+    Event.objects.filter(time__minute=46)
     Event.objects.filter(timestamp__minute__gte=29)
 
 SQL equivalent::
 
     SELECT ... WHERE EXTRACT('minute' FROM timestamp) = '29';
+    SELECT ... WHERE EXTRACT('minute' FROM time) = '46';
     SELECT ... WHERE EXTRACT('minute' FROM timestamp) >= '29';
 
 (The exact SQL syntax varies for each database engine.)
 
-When :setting:`USE_TZ` is ``True``, values are converted to the current time
-zone before filtering.
+For datetime fields, When :setting:`USE_TZ` is ``True``, values are converted
+to the current time zone before filtering.
+
+.. versionchanged:: 1.9
+
+    Added support for :class:`~django.db.models.TimeField` on SQLite (other
+    databases supported it as of 1.7).
 
 .. versionchanged:: 1.9
 
@@ -2660,23 +2674,30 @@ zone before filtering.
 second
 ~~~~~~
 
-For datetime fields, an exact second match. Allows chaining additional field
-lookups. Takes an integer between 0 and 59.
+For datetime and time fields, an exact second match. Allows chaining additional
+field lookups. Takes an integer between 0 and 59.
 
 Example::
 
     Event.objects.filter(timestamp__second=31)
+    Event.objects.filter(time__second=2)
     Event.objects.filter(timestamp__second__gte=31)
 
 SQL equivalent::
 
     SELECT ... WHERE EXTRACT('second' FROM timestamp) = '31';
+    SELECT ... WHERE EXTRACT('second' FROM time) = '2';
     SELECT ... WHERE EXTRACT('second' FROM timestamp) >= '31';
 
 (The exact SQL syntax varies for each database engine.)
 
-When :setting:`USE_TZ` is ``True``, values are converted to the current time
-zone before filtering.
+For datetime fields, when :setting:`USE_TZ` is ``True``, values are converted
+to the current time zone before filtering.
+
+.. versionchanged:: 1.9
+
+    Added support for :class:`~django.db.models.TimeField` on SQLite (other
+    databases supported it as of 1.7).
 
 .. versionchanged:: 1.9
 

docs/releases/1.9.txt

@@ -245,6 +245,10 @@ Models
   (such as :lookup:`exact`, :lookup:`gt`, :lookup:`lt`, etc.). For example:
   ``Entry.objects.filter(pub_date__month__gt=6)``.
 
+* Time lookups (hour, minute, second) are now supported by
+  :class:`~django.db.models.TimeField` for all database backends. Support for
+  backends other than SQLite was added but undocumented in Django 1.7.
+
 * You can specify the ``output_field`` parameter of the
   :class:`~django.db.models.Avg` aggregate in order to aggregate over
   non-numeric columns, such as ``DurationField``.
@@ -374,6 +378,12 @@ Database backend API
 * To use the new ``date`` lookup, third-party database backends may need to
   implement the ``DatabaseOperations.datetime_cast_date_sql()`` method.
 
+* The ``DatabaseOperations.time_extract_sql()`` method was added. It calls the
+  existing ``date_extract_sql()`` method. This method is overridden by the
+  SQLite backend to add time lookups (hour, minute, second) to
+  :class:`~django.db.models.TimeField`, and may be needed by third-party
+  database backends.
+
 Default settings that were tuples are now lists
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~