Fixed #13882 -- Removed an unnecessary nested where clause introduced on __isnull queries. Thanks to Alex Gaynor for the report and patch.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@13456 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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@ -1090,10 +1090,7 @@ class Query(object):
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# exclude the "foo__in=[]" case from this handling, because
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# it's short-circuited in the Where class.
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# We also need to handle the case where a subquery is provided
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entry = self.where_class()
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entry.add((Constraint(alias, col, None), 'isnull', True), AND)
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entry.negate()
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self.where.add(entry, AND)
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self.where.add((Constraint(alias, col, None), 'isnull', False), AND)
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if can_reuse is not None:
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can_reuse.update(join_list)
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