如何更新我的列Value = Value + 1？

Question

我想更新test1表格的某些行。 ColumnB必须是10 11,12,13,14 .... 但我的表

例如：

ColumnA是父节点。 ColumnA + ColumnB是主键。例如ColumnA是CustomerNumber。 ColumnB是客户的订单号。

create table test1(ColumnA int,  ColumnB int,  ColumnC int);
Insert Into test1 Values(1, 9,123);
Insert Into test1 Values(1, 10,0);
Insert Into test1 Values(1, 10,0);
Insert Into test1 Values(1, 10,0);
Insert Into test1 Values(1, 10,0);
Insert Into test1 Values(2, 12,128);
Insert Into test1 Values(2, 12,0);
Insert Into test1 Values(3, 11,145);
Insert Into test1 Values(3, 11,0);

不应该那样：

应该是以下内容：

我的工作代码不正确：

    update a set a.ColumnB=a.ColumnB+1
from test1 a 
inner join test1 b
on b.ColumnA=a.ColumnA
and a.ColumnC=0;
select * from test1;

我该怎么做？如何将我的第一个表更新为第二个表。

Answer 1

请尝试：

with T as(
select 
    row_number() over (partition by ColumnA order by ColumnA) Rnum, 
    min(ColumnB) over (partition by ColumnA) MinVal, 
    * 
From test1
) update T set ColumnB=MinVal+(Rnum-1)

Answer 2

试试这个：

WITH CTE
AS
(
  SELECT *,
    ROW_NUMBER() OVER(PARTITION BY ColumnA
                      ORDER BY ColumnB) AS RN
  FROM test1
)
UPDATE t 
SET t.ColumnB = CASE 
                  WHEN RN = 1 THEN ColumnB 
                  ELSE ColumnB + RN - 1 
                END  
FROM CTE AS t;

SQL Fiddle Demo