select right(cast('0000000000'+rtrim(字段) as varchar(20)),7)

declare @i int
declare @qid int

set @i=1
set @qid=100

while @i<50000
begin
insert into Order(orderid,ordername) values(@qid,'订单名称')
set @i=@i+1
set @qid=@qid+1
end