mirrors/django
1
0
Fork 0
mirror of https://github.com/django/django.git synced 2025-10-24 06:06:09 +00:00
Code Issues 32 Releases Wiki Activity

Fixed #13156 -- Ensure that exists() queries are as fast as they can be. Thanks to Jerome Leclanche for the report.

Browse Source 
git-svn-id: http://code.djangoproject.com/svn/django/trunk@12810 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Russell Keith-Magee
2010-03-20 10:37:57 +00:00
parent d58020fce8
commit 9f6a82fafb
2 changed files with 15 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
tests/regressiontests/queries/models.py
View File

@@ -277,6 +277,16 @@ class Plaything(models.Model):
__test__ = {'API_TESTS':"""
>>> # Regression for #13156 -- exists() queries have minimal SQL
>>> from django.db import connection
>>> settings.DEBUG = True
>>> Tag.objects.exists()
False
>>> # Ok - so the exist query worked - but did it include too many columns?
>>> "id" not in connection.queries[-1]['sql'] and "name" not in connection.queries[-1]['sql']
True
>>> settings.DEBUG = False
>>> generic = NamedCategory.objects.create(name="Generic")
>>> t1 = Tag.objects.create(name='t1', category=generic)
>>> t2 = Tag.objects.create(name='t2', parent=t1, category=generic)