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-rw-r--r--django/db/backends/postgresql/operations.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/django/db/backends/postgresql/operations.py b/django/db/backends/postgresql/operations.py
index 56e1331f75..ee7787c560 100644
--- a/django/db/backends/postgresql/operations.py
+++ b/django/db/backends/postgresql/operations.py
@@ -271,7 +271,8 @@ class DatabaseOperations(BaseDatabaseOperations):
if internal_type == 'DateField':
lhs_sql, lhs_params = lhs
rhs_sql, rhs_params = rhs
- return "(interval '1 day' * (%s - %s))" % (lhs_sql, rhs_sql), lhs_params + rhs_params
+ params = (*lhs_params, *rhs_params)
+ return "(interval '1 day' * (%s - %s))" % (lhs_sql, rhs_sql), params
return super().subtract_temporals(internal_type, lhs, rhs)
def window_frame_range_start_end(self, start=None, end=None):