[Enhancement]: we need to supply an ability to complete historical partition

[yhilmare]

What would you like to be added?

we need to allow user complete the historical partition, eg.

create table xxx(
    ...
) partition by range columns(parti_key) (
    partition p20180101 values less than ('2018-01-01')
);

as you can see: the latest partition is far from now, we need to allow user create several partition from past to now~

Why is this needed?

user is not happy if we don't have this ability