在列

Question

我有以下代码，我需要替换或追加具有相同名称的字符串。怎么办呢？

我需要使用基于IDNUM的整数追加或替换“ATTRIBUTENAME”列。

         CREATE TABLE #STATICFILTER
         (
       IDNUM INTEGER IDENTITY(1,1),
       ATTRIBUTENAME VARCHAR(MAX),
            )

       Insert into #STATICFILTER
       Select * from SPLIT((Select ERSBusinessLogic_Inputs from            


       ERSBusinessLogic WHERE ERSBusinessLogic_ID =@BusinessID ))

      CREATE TABLE #STATICFILTER2
       (
         IDNUM INTEGER IDENTITY(1,1),
         ATTRIBUTENAME VARCHAR(MAX),
         STATICID INTEGER
          )
        Insert into #STATICFILTER2
        Select M.ATTRIBUTENAME,SL.ERSStatisticType_ID from #STATICFILTER M                    
        LEFT join [CoSD].[ERSStatisticType_LU] SL
        ON M.ATTRIBUTENAME collate SQL_Latin1_General_CP1_CI_AS  =  
        SL.ERSStatisticType_Attribute collate SQL_Latin1_General_CP1_CI_AS 

       UPDATE #STATICFILTER2
       SET ATTRIBUTENAME = ATTRIBUTENAME + CAST(RN AS varchar(1)) FROM 
                (SELECT ROW_NUMBER() OVER(PARTITION BY ATTRIBUTENAME ORDER  
                                                            BY IDNUM) AS RN
                 FROM #STATICFILTER2) AS NEWATTRIBUTENAME

按照以下评论列出一些结果......

                  #STATICFILTER2 has the below values

                   IDNUM    Attributename  Inputvalues
                   ------------------------------------
                      1         IMPORTS      45
                      2         IMPORTS      23
                      3         IMPORTS      28

当我执行上述更新代码时，值将更新为

                   IDNUM    Attributename  Inputvalues
                   ------------------------------------
                      1         IMPORTS1      45
                      2         IMPORTS1      23
                      3         IMPORTS1      28

而不是更新为

                   IDNUM    Attributename  Inputvalues
                   ------------------------------------
                      1         IMPORTS1      45
                      2         IMPORTS2      23
                      3         IMPORTS3      28

Answer 1

我不熟悉SQL Server的UPDATE FROM，所以我不知道你的更新语句有什么问题。但您可以使用WITH子句而不是FROM：

来解决它

with upd as
(
  select s.*, row_number() over (partition by attributename order by idnum) as rn
  from #staticfilter s
)
update upd
set attributename = attributename + cast(rn as varchar);

我认为不同之处在于，使用WITH创建包含行号的视图并更新基础表，而使用FROM更新表并使用FROM查找值，因此对于每行评估FROM和结果在第1行，因为它只是你一次看的一行。但这可能是错的;如上所述，我不熟悉这种语法。