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Code Issues 32 Releases Wiki Activity

Fixed #32116 -- Fixed QuerySet.order_by() crash on EmptyQuerySet with union() on a single non-empty ordered queryset.

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This commit is contained in:
Hannes Ljungberg
2020-10-17 21:54:36 +02:00
committed by Mariusz Felisiak
parent 4e4db426c5
commit c7c7615d00
2 changed files with 10 additions and 1 deletions
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6
django/db/models/query.py
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@@ -995,7 +995,11 @@ class QuerySet:
# If the query is an EmptyQuerySet, combine all nonempty querysets.
if isinstance(self, EmptyQuerySet):
qs = [q for q in other_qs if not isinstance(q, EmptyQuerySet)]
return qs[0]._combinator_query('union', *qs[1:], all=all) if qs else self
if not qs:
return self
if len(qs) == 1:
return qs[0]
return qs[0]._combinator_query('union', *qs[1:], all=all)
return self._combinator_query('union', *other_qs, all=all)
def intersection(self, *other_qs):