#12870: ORM bug with using exclude in conjunction with Q objects
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Reporter: subsume | Owner: nobody
Status: new | Milestone:
Component: Database layer (models, ORM) | Version: 1.1
Keywords: exclude Q | Stage: Unreviewed
Has_patch: 0 |
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Here's a shell session which illustrates the problem.
>>> from tapped.deck.models import Deck
>>> from django.db.models import Q
>>> Deck.objects.filter(user__username='nammertime')
[<Deck: Walled Out (Legacy) *Private*>, <Deck: Reign of Fire (Legacy)
*Private*>, <Deck: Wake of the Cataclysm (Legacy) *Private*>, <Deck: WMDs
(Extended) *Private*>, <Deck: Chernabog (Legacy) *Private*>, <Deck: Dark
Alliance (Legacy) *Private*>, <Deck: Elf Horde (Legacy) *Private*>, <Deck:
Natural Selection *Private*>, <Deck: Sliver Rush (Legacy) *Private*>,
<Deck: Rath's Last Conscripts (Legacy) *Private*>, <Deck: Furious Assault
(Legacy) *Private*>, <Deck: Urza's Venom (Legacy) *Private*>, <Deck:
Sapling EDH (Legacy) *Private*>, <Deck: Ashling EDH (Legacy) *Private*>]
>>> Deck.objects.filter(user__username='nammertime').count()
14
>>>
Deck.objects.filter(user__username='nammertime').exclude(category='pro').exclude(category='precon')
[<Deck: Walled Out (Legacy) *Private*>, <Deck: Reign of Fire (Legacy)
*Private*>, <Deck: Wake of the Cataclysm (Legacy) *Private*>, <Deck: WMDs
(Extended) *Private*>, <Deck: Chernabog (Legacy) *Private*>, <Deck: Dark
Alliance (Legacy) *Private*>, <Deck: Elf Horde (Legacy) *Private*>, <Deck:
Natural Selection *Private*>, <Deck: Sliver Rush (Legacy) *Private*>,
<Deck: Rath's Last Conscripts (Legacy) *Private*>, <Deck: Furious Assault
(Legacy) *Private*>, <Deck: Urza's Venom (Legacy) *Private*>, <Deck:
Sapling EDH (Legacy) *Private*>, <Deck: Ashling EDH (Legacy) *Private*>]
>>>
Deck.objects.filter(user__username='nammertime').exclude(category='pro').exclude(category='precon').count()
14
>>>
Deck.objects.filter(user__username='nammertime').exclude(Q(category='pro')|Q(category='precon'))
>>>
Deck.objects.filter(user__username='nammertime').exclude(Q(category='pro')|Q(category='precon'))
[]
>>>
Deck.objects.filter(user__username='nammertime').exclude(Q(category='pro')|Q(category='precon')).count()
0
>>>
Deck.objects.filter(user__username='nammertime').filter(category='pro')
[]
>>>
Deck.objects.filter(user__username='nammertime').filter(category='precon')
[]
>>>
Deck.objects.filter(user__username='nammertime').exclude(Q(category='pro')|Q(category='precon')).query.as_sql()
('SELECT `deck_deck`.`id`, `deck_deck`.`format_id`, `deck_deck`.`name`,
`deck_deck`.`slug`, `deck_deck`.`user_id`, `deck_deck`.`description`,
`deck_deck`.`profile_cardinality`, `deck_deck`.`date_added`,
`deck_deck`.`date_updated`, `deck_deck`.`date_refreshed`,
`deck_deck`.`is_private`, `deck_deck`.`category`,
`deck_deck`.`preconstructed_set_id`, `deck_deck`.`cost`,
`deck_deck`.`view_count_cache`, `deck_deck`.`comment_count_cache`,
`deck_deck`.`data_generated`, `deck_deck`.`image_token`,
`deck_deck`.`similar_due`, `deck_deck`.`rating_votes`,
`deck_deck`.`rating_score` FROM `deck_deck` INNER JOIN `auth_user` ON
(`deck_deck`.`user_id` = `auth_user`.`id`) WHERE (`auth_user`.`username` =
%s AND NOT ((`deck_deck`.`category` = %s OR `deck_deck`.`category` = %s
)))', ('nammertime', 'pro', 'precon'))
>>>
Deck.objects.filter(user__username='nammertime').exclude(category='pro').exclude(category='precon').query.as_sql()
('SELECT `deck_deck`.`id`, `deck_deck`.`format_id`, `deck_deck`.`name`,
`deck_deck`.`slug`, `deck_deck`.`user_id`, `deck_deck`.`description`,
`deck_deck`.`profile_cardinality`, `deck_deck`.`date_added`,
`deck_deck`.`date_updated`, `deck_deck`.`date_refreshed`,
`deck_deck`.`is_private`, `deck_deck`.`category`,
`deck_deck`.`preconstructed_set_id`, `deck_deck`.`cost`,
`deck_deck`.`view_count_cache`, `deck_deck`.`comment_count_cache`,
`deck_deck`.`data_generated`, `deck_deck`.`image_token`,
`deck_deck`.`similar_due`, `deck_deck`.`rating_votes`,
`deck_deck`.`rating_score` FROM `deck_deck` INNER JOIN `auth_user` ON
(`deck_deck`.`user_id` = `auth_user`.`id`) WHERE (`auth_user`.`username` =
%s AND NOT (`deck_deck`.`category` = %s AND NOT (`deck_deck`.`category`
IS NULL)) AND NOT (`deck_deck`.`category` = %s AND NOT
(`deck_deck`.`category` IS NULL)))', ('nammertime', 'pro', 'precon'))
--
Ticket URL: <http://code.djangoproject.com/ticket/12870>
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