diff options
Diffstat (limited to 'django/db/models/sql')
| -rw-r--r-- | django/db/models/sql/query.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py index 9e67e9a993..cbbbee20ba 100644 --- a/django/db/models/sql/query.py +++ b/django/db/models/sql/query.py @@ -1050,6 +1050,10 @@ class Query(object): raise ValueError("Cannot use None as a query value") lookup_type = 'isnull' value = True + elif (value == '' and lookup_type == 'exact' and + connection.features.interprets_empty_strings_as_nulls): + lookup_type = 'isnull' + value = True elif callable(value): value = value() |