日期:2014-05-17 浏览次数:20444 次
create table TableA
(Col01 varchar(10),Col02 varchar(10))
insert into TableA
select '张三','80' union all
select '张三','87' union all
select '','ABC' union all
select '李四','32' union all
select '赵5','83' union all
select '','kk' union all
select '','TT'
-- 更新
with t as
(select Col01,Col02,
row_number() over(order by getdate()) 'rn'
from TableA)
update a
set a.Col01=(select top 1 b.Col01 from t b
where b.rn<a.rn and b.Col01<>''
order by b.rn desc)
from t a
where a.Col01=''
-- 结果
select Col01,Col02 from TableA
/*
Col01 Col02
---------- ----------
张三 80
张三 87
张三 ABC
李四 32
赵5 83
赵5 kk
赵5 TT
(7 row(s) affected)
*/
create table TableA
(Col01 varchar(10),Col02 varchar