SQL自动生成A到Z二十六个英文字母

if object_id('#tempdriveinfo') is not null
   drop table #tempdriveinfo
create table #tempdriveinfo
(
  [driveinfoid] tinyint identity primary key not null,
  [drivename] nvarchar(10)
)
declare @firstcapitalletters int
set @firstcapitalletters = 65  

while @firstcapitalletters <= 90
begin
    insert into  #tempdriveinfo ([drivename]) values (char(@firstcapitalletters))
    set @firstcapitalletters = @firstcapitalletters + 1
end
select * from  #tempdriveinfo