SchemaEditor: Alter Default requires column definition

[Max Bothe]

Hi all,

Some databases (like SAP HANA) don't support adding or removing a default value of a column without redefining the column [1].

In order to support custom backends for these databases, the column definition has to be passed additionally to the format strings sql_alter_column_default and sql_alter_column_no_default in django.db.backend.base.schema.BaseSchemaEditor .

Comments are welcome.

Thanks,

Max  

[1] https://help.sap.com/saphelp_hanaplatform/helpdata/en/20/d329a6751910149d5fdbc4800f92ff/content.htm#loio20d329a6751910149d5fdbc4800f92ff__sql_alter_table_1alter_table_alter_column_clause

[Tim Graham]

What sort of comments are you looking for?