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| author | Russell Keith-Magee <russell@keith-magee.com> | 2010-03-20 10:37:57 +0000 |
|---|---|---|
| committer | Russell Keith-Magee <russell@keith-magee.com> | 2010-03-20 10:37:57 +0000 |
| commit | 9f6a82fafbd84865a06e162c14b6a5d5e110babe (patch) | |
| tree | 1cde51216f8f848867ec52b496be5e1a142d3ec3 /django/db/models/sql/query.py | |
| parent | d58020fce8019e3a9df717e0a78a9833c85094b7 (diff) | |
Fixed #13156 -- Ensure that exists() queries are as fast as they can be. Thanks to Jerome Leclanche for the report.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@12810 bcc190cf-cafb-0310-a4f2-bffc1f526a37
Diffstat (limited to 'django/db/models/sql/query.py')
| -rw-r--r-- | django/db/models/sql/query.py | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py index 9a19a9ea95..ffc9d3b13f 100644 --- a/django/db/models/sql/query.py +++ b/django/db/models/sql/query.py @@ -377,10 +377,13 @@ class Query(object): def has_results(self, using): q = self.clone() q.add_extra({'a': 1}, None, None, None, None, None) - q.add_fields(()) + q.select = [] + q.select_fields = [] + q.default_cols = False + q.select_related = False q.set_extra_mask(('a',)) q.set_aggregate_mask(()) - q.clear_ordering() + q.clear_ordering(True) q.set_limits(high=1) compiler = q.get_compiler(using=using) return bool(compiler.execute_sql(SINGLE)) |