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Fixed #12079: Changed has_results to get a single result, thus preventing exists() from always returning True on backends that support chunked reads.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@11654 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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@ -385,7 +385,8 @@ class BaseQuery(object):
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q.set_extra_mask(('a',))
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q.set_aggregate_mask(())
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q.clear_ordering()
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return bool(q.execute_sql())
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q.set_limits(high=1)
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return bool(q.execute_sql(SINGLE))
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def as_sql(self, with_limits=True, with_col_aliases=False):
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"""
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