更新多行SQL Server 2008

Question

美好的一天，我试图更新我的表。因为我的网站有错误。首先请检查我的桌子。 （Penilaian_Header）

IdPenilaian | KodePenilaian  | Nip | PositionCode | Total 
    1613   -----    1603405 P028   0 
    1618   -----    1602999 P028   0 
    1641   PE0001568   603060 P040   35 
    1640   PE0001567   1411862 P007   35 

正如你所看到的。有两行KodePenilaian为空。那么是否有机会填补它？所以结果会是这样的。

IdPenilaian | KodePenilaian  | Nip | PositionCode | Total 
    1613   PE0001570   1603405  P028   0 
    1618   PE0001569   1602999  P028   0 
    1641   PE0001568   603060 P040   35 
    1640   PE0001567   1411862 P007   35 

该如何生成KodePenilaian

select case 
    when right(max(KodePenilaian),7) is null then 'PE0000001' 
    else ('PE' + RIGHT('0000000' + cast(right(max(KodePenilaian),7) + 1 as nvarchar),7)) 
    end KodePenilaian from Penilaian_Header 

，这里是有导致当我运行它

KodePenilaian 
    PE0001569 

谢谢，对不起我的英语不好。

Answer 1

没有真正使用到SQL Server 2008 尝试是这样的：

update Penilaian_Header pen 
    set pen.KodePenilaian = 
      (select case 
        when right(max(newKode.KodePenilaian),7) is null then 'PE0000001' 
        else ('PE' + RIGHT('0000000' + cast(right(max(newKode.KodePenilaian),7) + 1 as nvarchar),7)) 
        end KodePenilaian 
       from Penilaian_Header newKode) 
where pen.KodePenilain = NULL 

如果-----是表中NULL

Answer 2

你可以试试这个方法...

;WITH cte 
AS (SELECT *, 
    MAX(CONVERT(int, REPLACE(KodePenilaian, 'PE000', ''))) OVER() AS MaxNum, 
    ROW_NUMBER() OVER (ORDER BY kodePenilaian) AS rn 
FROM YourTable) 
UPDATE cte SET KodePenilaian = concat('PE000', maxnum + rn) 
    WHERE KodePenilaian IS NULL 

您的表格

create table YourTable (
IdPenilaian int, KodePenilaian varchar(20), Nip int, PositionCode varchar(10), Total INT) 

insert into YourTable 
(IdPenilaian , KodePenilaian  , Nip , PositionCode , Total) values 
    ( 1613  ,  NULL   ,  1603405 ,'P028',   0 ) 
    ,( 1618  ,  NULL   ,  1602999 ,'P028',   0 ) 
    ,( 1641  , 'PE0001568' ,  603060 ,'P040',   35 ) 
    ,( 1640  , 'PE0001567' ,  1411862 ,'P007',   35 )