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Diffstat (limited to 'django/db/backends/oracle/schema.py')
| -rw-r--r-- | django/db/backends/oracle/schema.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/django/db/backends/oracle/schema.py b/django/db/backends/oracle/schema.py index d6585a80ca..002cb9e48b 100644 --- a/django/db/backends/oracle/schema.py +++ b/django/db/backends/oracle/schema.py @@ -122,6 +122,17 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor): # Rename and possibly make the new field NOT NULL super().alter_field(model, new_temp_field, new_field) + def _alter_column_type_sql(self, model, old_field, new_field, new_type): + auto_field_types = {'AutoField', 'BigAutoField', 'SmallAutoField'} + # Drop the identity if migrating away from AutoField. + if ( + old_field.get_internal_type() in auto_field_types and + new_field.get_internal_type() not in auto_field_types and + self._is_identity_column(model._meta.db_table, new_field.column) + ): + self._drop_identity(model._meta.db_table, new_field.column) + return super()._alter_column_type_sql(model, old_field, new_field, new_type) + def normalize_name(self, name): """ Get the properly shortened and uppercased identifier as returned by |