SQL Serverでサーバー名を動的に渡す方法

Question

SET NOCOUNT ON; 

DECLARE @sql NVARCHAR(MAX), 
     @servername NVARCHAR(255) 

SET @servername = '[s-printstream]' 

--Drop Table #Actual 
CREATE TABLE #Actual 
(
    jobnumber INT, 
    firstNameCounts VARCHAR(25), 
    lastNameCounts VARCHAR(25), 
    address1Counts VARCHAR(25), 
    address2Counts VARCHAR(25), 
    cityCounts VARCHAR(25), 
    stateCounts VARCHAR(25), 
    zipCounts VARCHAR(25), 
    inHomeDateCounts VARCHAR(25) 
) 

SET @sql = 'INSERT INTO #actual (jobnumber,firstNameCounts,lastNameCounts , address1Counts, address2Counts, cityCounts, stateCounts, zipCounts, inHomeDateCounts) ' 
SET @sql = @sql + ' Select s.jobnumber, count(s.firstName) AS [firstNameCounts], Count (s.lastName) AS [lastNameCounts], Count (s.Address1) As [address1Counts], Count (s.address2)-Count (address2) AS ' 
SET @sql = @sql + ' [address2Counts], Count (s.City) AS [cityCounts], Count (s.State) AS [stateCounts], Count (s.Zip) AS [zipCounts], Count (jb.inHomeDate) AS [inHomeDateCounts] ' 
SET @sql = @sql + ' From' + ' @servername ' + '.[tdis_417133]' + '.[dbo].[tblStandardFinal] s ' 
SET @sql = @sql + ' INNER JOIN [s-printstream].[tdSchedule2].[dbo].[tblJobTicketActions] jb ' 
SET @sql = @sql + ' ON jb.psFlagJobNumber = s.jobNumber ' 
SET @sql = @sql + ' where jobNumber = @jobNumber ' 
SET @sql = @sql + ' group by jobNumber ' 

PRINT @SQL 

EXEC sp_executesql @sql 
    ,N'@JobNumber Varchar(25)' 
    ,@JobNumber = 417133 

データベース名だけでなくサーバー名も動的に渡す方法はありますか？私が試してみると、私はこのエラーになります：

Msg 137, Level 15, State 2, Line 1
Must declare the scalar variable "@servername"

何か助けていただければ幸いです。

おかげ

Answer 1

または単一引用符を使用して、変数を囲むないSQLコマンドに

EXEC sp_executesql @sql 
    ,N'@JobNumber Varchar(25),@servername nvarchar(255)' 
    ,@JobNumber = 417133,@servername=@servername