#11332: Group by doesn't work properly with PostgreSQL
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Reporter: Loststylus | Owner: nobody
Status: new | Milestone:
Component: Uncategorized | Version: 1.0
Keywords: | Stage: Unreviewed
Has_patch: 0 |
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I am trying to execute a query running Django 1.0.2 with PostgreSQL 8.3:
>>> from accounts import models as m
>>> from django.contrib.auth.models import User
>>> me = User.objects.get(pk=1)
>>> me
<User: root>
>>> messages_from_me = m.PersonalMessage.objects.filter(from_id = me,
hide_from = False).order_by('-time','-pk')
>>> messages_from_me.query.group_by=['-to_id_id']
I get the following error:
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py",
line 147, in __repr__
data = list(self[:REPR_OUTPUT_SIZE + 1])
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py",
line 162, in __len__
self._result_cache.extend(list(self._iter))
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py",
line 275, in iterator
for row in self.query.results_iter():
File "/usr/local/lib/python2.6/dist-
packages/django/db/models/sql/query.py", line 206, in results_iter
for rows in self.execute_sql(MULTI):
File "/usr/local/lib/python2.6/dist-
packages/django/db/models/sql/query.py", line 1734, in execute_sql
cursor.execute(sql, params)
File "/usr/local/lib/python2.6/dist-
packages/django/db/backends/util.py", line 19, in execute
return self.cursor.execute(sql, params)
ProgrammingError: колонка "accounts_personalmessage.id" должна
фигурировать в выражении GROUP BY или использоваться в агрегатной функции
The last line is in Russian, it says something like column
"accounts_personalmessage.id" should be in GROUP BY expression or should
be used in aggregation function.
The same code works normally for sqlite.
--
Ticket URL: <http://code.djangoproject.com/ticket/11332>
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