Table customization with default db generated value possible?

[smaktacular]

Hi,

please consider the following table:

create TABLE test (
	id int8 DEFAULT generate_id(),
	test text 
);

Is there a table generation option that allows one to specify the "DEFAULT" part, here the generate_id() function in combination with a custom id generation or the NoOpIdGeneration strategy?

The reason for using this and not e.g. HiLo generation is that we want to make use of systemwide sequential, unique ids, while supporting sharding. See:
[(https://rob.conery.io/2014/05/28/a-better-id-generator-for-postgresql/)]

Regards