I hope that：
in the https://www.postgresql.org/docs/14/datatype-characterin.html ，It needs
to be written clearly “bpchar” data type，
and in the above url, Only mentioned “blank padded” ，If someone does not know
this knowledge point（blank padded =bp），he/she will make a detour in the study
On Wed, 2022-09-14 at 17:41 +0800, yanliang lei wrote:
> I hope that：
>
> in the https://www.postgresql.org/docs/14/datatype-characterin.html ，It
> needs to be written clearly “bpchar” data type，
>
> and in the above url, Only mentioned “blank padded” ，If someone does not know
> this knowle
