数字格式化输出

有表如下:
CREATE TABLE [T1] (
[U_ID] [int] NOT NULL ,
[U_DATA] [int] NULL  COLLATE Chinese_PRC_CI_AS NULL ,
CONSTRAINT [PK_T1] PRIMARY KEY  CLUSTERED
(
[U_ID]
)  ON [PRIMARY]
) ON [PRIMARY]insert into t1
select 100,1
union all
select 110,2
union all
select 120,3select * from t1希望结果如下:
U_ID     U_DATA
100       00001
110       00002
120       00003
求SQL语句