如何使用一個數據庫表到另一個數據庫的存儲過程，動態傳遞的數據庫名稱

Question

現在我使用一個數據庫表到另一個數據庫存儲過程正常（database name..table name），但我已經動態傳遞的數據庫名稱怎麼寫存儲程序請給我任何建議

我寫這樣的

Select QT.Name,SC.Name as Status,QT.QuoteNumber,QT.PolicyNumber,LC.Name as LineCode,QT.DBAName as DBAName  
    from QMSV3Dev..Quote QT, QMSV3Dev..StatusCode SC, QMSV3Dev..LineCode LC  
    where QT.StatusCode = SC.StatusCode And QT.LineCode = LC.LineCode and  
    QT.DBAName like 'a%' order by QT.Name,QuoteNumber desc 

在上面的存儲過程QMSV3Dev..Quote，QMSV3Dev是數據庫名稱和Quote是表名，這個SP像另一個數據庫中執行現在

同樣的查詢通過數據庫名稱動態

CREATE Procedure [dbo].[usp_GetSearch123]  
(  
@SearchValue varchar(100),  
@SearchBy varchar(250), 
@DbName varchar(50)  
)  
AS  
Begin 
    Select QT.Name,SC.Name as Status,QT.QuoteNumber,QT.PolicyNumber,LC.Name as LineCode,QT.DBAName as DBAName   
    from @DbName+'..Quote ' QT,@DbName+'.. StatusCode' SC, @DbName+'..Linecodes' LC  
    where QT.StatusCode = SC.StatusCode And QT.LineCode = LC.LineCode and  
    (QT.Name like @SearchValue+'%' or QT.DBAName like @SearchValue+'%')  
    order by QT.Name,QuoteNumber desc 
end 

Answer 1

答案是您想象中簡單。對於這一點，你必須使用Dynamic SQL。

這將是這樣的：

CREATE Procedure [dbo].[usp_GetSearch123]  
(  
@SearchValue varchar(100),  
@SearchBy varchar(250), 
@DbName varchar(50)  
)  
AS  
Begin 

    Declare @cmd varchar(5000) 

    select @cmd = 
    'Select QT.Name,SC.Name as Status,QT.QuoteNumber,QT.PolicyNumber,LC.Name as LineCode,QT.DBAName as DBAName   
    from ' + @DbName + '..Quote QT, ' + @DbName + '.. StatusCode SC, ' + @DbName+'..Linecodes LC  
    where QT.StatusCode = SC.StatusCode And QT.LineCode = LC.LineCode and  
    (QT.Name like "' + @SearchValue + '%" or QT.DBAName like "' + @SearchValue +'%")  
    order by QT.Name,QuoteNumber desc' 

    exec(@cmd) 
end 

---

您創建一個varchar變量@cmd，把選擇它，事後exec(@cmd)執行它。