如何在不使用遊標的情況下調用表中每行的參數化存儲過程

Question

我的存儲過程接受一個參數並返回單個值。我的要求是要調用存儲過程每行與公司ID的表。我試過，但它不會工作

SELECT CompanyID,CompanyName,EmailID,'Exec Usp_GetCount' 

+CONVERT(varchar(256),companyID) 'Employees' from Tbl_Company 

感謝

Answer 1

在您選擇使用一個函數，而不是一個存儲過程 - 樣，那麼你可以做的事情：

SELECT CompanyId, CompanyName, dbo.GetCount(CompanyId) 'Employees' 
FROM Tbl_Company 
WHERE... 

Answer 2

試試這個 -

如果SP：

DECLARE @temp TABLE 
(
     CompanyID INT 
    , Cnt INT 
) 

DECLARE @CompanyID INT 

DECLARE cur CURSOR FAST_FORWARD READ_ONLY FOR 
    SELECT DISTINCT CompanyID 
    FROM dbo.Tbl_Company 

OPEN cur 

FETCH NEXT FROM cur INTO @CompanyID 

WHILE @@FETCH_STATUS = 0 BEGIN 

    DECLARE @Result INT 
    EXEC @Result = dbo.Usp_GetCount CONVERT(VARCHAR(256), @CompanyID) 

    INSERT INTO @temp (CompanyID, Cnt) 
    SELECT @CompanyID, @Result 

    FETCH NEXT FROM cur INTO @CompanyID 

END 

CLOSE cur 
DEALLOCATE cur 

SELECT 
     c.CompanyID 
    , c.CompanyName 
    , c.EmailID 
    , Employees = t.Cnt 
FROM dbo.Tbl_Company c 
JOIN @temp t ON t.CompanyID = c.CompanyID 

如果標量函數：

SELECT 
     c.CompanyID 
    , c.CompanyName 
    , c.EmailID 
    , Employees = dbo.GetCount(c.CompanyID) 
FROM dbo.Tbl_Company c 

[存儲過程對於每一行，而無需使用一個光標SQL調用]（的