diff options
Diffstat (limited to 'django/db/models/sql')
| -rw-r--r-- | django/db/models/sql/query.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py index 154b6bd204..d26b8d5c95 100644 --- a/django/db/models/sql/query.py +++ b/django/db/models/sql/query.py @@ -1913,5 +1913,7 @@ def alias_diff(refcounts_before, refcounts_after): Given the before and after copies of refcounts works out which aliases have been added to the after copy. """ + # Use -1 as default value so that any join that is created, then trimmed + # is seen as added. return set(t for t in refcounts_after - if refcounts_after[t] > refcounts_before.get(t, 0)) + if refcounts_after[t] > refcounts_before.get(t, -1)) |