correct pattern for adding a column with a default value, without setting a server_default ?

[jvanasco]

I need to add a new INT column that is NOT NULL to an existing table in sqlite. The existing records should show an initial value of 1 during the migration, but the column should not have a default value when the migration is done - the default is to only be managed on the python side. I can think of a few ways to do this using consecutive batch_ops, but I wanted to know if there was a preferred way (readability? speed? another reason?)

• Alter table as nullable, set default, make not null
• Alter table as not-null with a server default, then drop server default
• other ways?