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Diffstat (limited to 'django/db/backends/mysql/schema.py')
| -rw-r--r-- | django/db/backends/mysql/schema.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/django/db/backends/mysql/schema.py b/django/db/backends/mysql/schema.py index 7f3a2d357b..f2f3f0a4ed 100644 --- a/django/db/backends/mysql/schema.py +++ b/django/db/backends/mysql/schema.py @@ -61,3 +61,11 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor): # index creation for FKs (index automatically created by MySQL) field.db_index = False return super(DatabaseSchemaEditor, self)._model_indexes_sql(model) + + def _alter_column_type_sql(self, table, old_field, new_field, new_type): + # Keep null property of old field, if it has changed, it will be handled separately + if old_field.null: + new_type += " NULL" + else: + new_type += " NOT NULL" + return super(DatabaseSchemaEditor, self)._alter_column_type_sql(table, old_field, new_field, new_type) |