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-rw-r--r--django/db/backends/postgresql/introspection.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/django/db/backends/postgresql/introspection.py b/django/db/backends/postgresql/introspection.py
index 921501a4a3..a08ac2d039 100644
--- a/django/db/backends/postgresql/introspection.py
+++ b/django/db/backends/postgresql/introspection.py
@@ -113,7 +113,8 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
FieldInfo(
line.name,
line.type_code,
- line.display_size,
+ # display_size is always None on psycopg2.
+ line.internal_size if line.display_size is None else line.display_size,
line.internal_size,
line.precision,
line.scale,