求一Sql - MS-SQL Server / 应用实例

我的数据库现存在如下类型字段和数据
A B
712 010101
212 010101
321 010101
434 010101
523 010101
656 010101

怎样将B字段数据实现如下
712 010101
212 010102
321 010103
434 010104
523 010105
656 010106

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SQL code:
if not object_id('tb') is null
drop table tb
Go
Create table tb([A] int,[B] varchar(10))
Insert tb
select 712,'010101' union all
select 212,'010101' union all
select 321,'010101' union all
select 434,'010101' union all
select 523,'010101' union all
select 656,'010101'
Go
declare @i int
set @i=0
update tb set b='0101'+right(100+@i,2),@I=@i+1
select * from tb
/*
A B
----------- ----------
712 010101
212 010102
321 010103
434 010104
523 010105
656 010106

(6 個資料列受到影響)
*/

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SQL code:
update
tb
set
b=b.b
from
tb a,
(select a,left(b,5)+ltrim(row_number()over(order by getdate())) as b from tb)b
where
a.a=b.a

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...

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SQL code

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