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-rw-r--r--django/db/backends/postgresql/operations.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/django/db/backends/postgresql/operations.py b/django/db/backends/postgresql/operations.py
index 80a28bce46..400f014a42 100644
--- a/django/db/backends/postgresql/operations.py
+++ b/django/db/backends/postgresql/operations.py
@@ -8,6 +8,10 @@ from django.db.backends.base.operations import BaseDatabaseOperations
class DatabaseOperations(BaseDatabaseOperations):
cast_char_field_without_max_length = 'varchar'
explain_prefix = 'EXPLAIN'
+ cast_data_types = {
+ 'AutoField': 'integer',
+ 'BigAutoField': 'bigint',
+ }
def unification_cast_sql(self, output_field):
internal_type = output_field.get_internal_type()