Question

我需要用查询中的某些文本替换数字。

我使用此代码

SELECT [hostname]
  ,[assetTag]
  ,[business]
  ,[building]
  ,replace([Building],'700','ICT') AS BuildingNR
  ,replace([Building],'879','Sales') AS BuildingNR  
FROM [osdDB].[dbo].[all_machines]

这是输出

 hostname   assetTag    business    building    BuildingNR  BuildingNR
 ICT103961  A62609      ICT_IMO_E_M 879     879     Sales
 ICT107826  A72752      ICT_IMO_SALES   700     ICT     700
 ICT108923  A73433      ICT_IMO_SALES   700     ICT     700
 ICT113735  A86955A     ICT_IMO_IS  879     879     Sales
 ICT108071  A73642      ICT_IMO_SALES   706     706     706
 ICT110732  A86111      ICT_IMO_SALES   700     ICT     700
 ICT108929  A73427      ICT_IMO_SALES   700     ICT     700
 ICT109648  A72895A     ICT_IMO_MRN 700     ICT     700
 ICT110919  A86778      ICT_IMO_SALES   700     ICT     700
 ICT102048  B81606A     ICT_IMO_SALES   700     ICT     700

但我想要这个输出

 hostname   assetTag    business    building
 ICT103961  A62609      ICT_IMO_E_M      Sales
 ICT107826  A72752      ICT_IMO_SALES    ICT
 ICT108923  A73433      ICT_IMO_SALES    ICT
 ICT113735  A86955A     ICT_IMO_IS       Sales
 ICT108071  A73642      ICT_IMO_SALES    ICT
 ICT110732  A86111      ICT_IMO_SALES    ICT
 ICT108929  A73427      ICT_IMO_SALES    ICT
 ICT109648  A72895A     ICT_IMO_MRN      ICT
 ICT110919  A86778      ICT_IMO_SALES    ICT
 ICT102048  B81606A     ICT_IMO_SALES    ICT

当我使用它时，我会得到很多行。我只想把它全部放在一排。

Answer 1

您可以使用case when语句而不是替换值

SELECT [hostname],[assetTag],[business],[building],
    case [Building] 
            when 700 then 'ICT'
            when 879 then 'Sales'
            else 'Value if not 700 or 879'
    end as building
FROM [osdDB].[dbo].[all_machines]

Answer 2

使用函数会更好：

CREATE FUNCTION [dbo].[f_GetBuildingName]
(
    @Building int
)
RETURNS nvarchar(200)
AS
BEGIN
DECLARE @value nvarchar(200)
SELECT 
    @value=case @Building
            when 700 then 'ICT'
            when 879 then 'Sales'
            else 'N/A'
    end
FROM [osdDB].[dbo].[all_machines]
RETURN @value
END

在选择查询中使用函数：

SELECT [hostname],[assetTag],[business],[building],
    [dbo].[f_GetBuildingName](building) as building
FROM [osdDB].[dbo].[all_machines]

您可以在任何function查询中使用此select，无需再次反复写入Case语句。

如果要修改结果，则必须仅修改function，而不是修改所有使用case语句进行此操作的select查询。

希望这对你和其他人也有帮助..！:)

sql替换1行中的值

2 个答案: