this is my partition function below
CREATE PARTITION FUNCTION [DatePartitionFunction](datetime) AS RANGE RIGHT FOR VALUES (N'2019-01-01T00:00:00.000', N'2020-01-01T00:00:00.000', N'2021-01-01T00:00:00.000', N'2022-01-01T00:00:00.000', N'2023-01-01T00:00:00.000')
GO
I want to make sub partition with branches or update the partition function with varchar(banchid|datetime).
thank u