how to add ‘st’,’nd’,’rd’,’th’ to dates in SQL Server

Create function [dbo].[get_Custome_date]
(
    @date datetime = null
)
returns nvarchar(50)
as begin
     
    declare @d int,
    @m nvarchar(15),
    @y nvarchar(4),
    @end nvarchar(1),
    @return nvarchar(50)
 
    if @date is null
        set @date=getdate()
    select @d=datepart(d, @date), @m=datename(m, @date), @Y=
datename(yyyy,@date), @end=right(convert(nvarchar(2), @d),1)
    set @return=
        convert(nvarchar(2), @d)
        +case
            when @d in(11, 12, 13) then 'th'
            when @end='1' then 'st'
            when @end='2' then 'nd'
            when @end='3' then 'rd'
            else 'th'  
        end
        +' '+@m+' '+@y
    return @return
 
end


======

select dbo.get_Custome_date(getdate()) AS Customedate

Result is

3rd November 2013