改變一個存儲過程，包括從另一個存儲過程結果/查詢

Question

我有這個存儲過程返回給定PARAMS

PROCEDURE [dbo].[vExport_GetClientDetailsBySchemeAndTeam] 
      @startdate DATETIME = null, 
      @enddate DATETIME = NULL, 
      @scheme INT, 
      @teamID INT 
AS 
/*returns a list of current client details between two dates */ 


SELECT 
    Forename, 
    Surname, 
    Address1, 
    Address2, 
    Town, 
    County, 
    Postcode, 
    [Status], 
    Telephone, 
    EmergencyTelephone 
    --exec vExport_GetClientDetailsBySchemeAndTeam '2010-04-06 12:00:00', '2011-04-06 12:00:00', '3', '152' 
FROM 
    vClients 
WHERE 
    vClients.ClientID in 
     (SELECT DISTINCT 
      E.ClientID 
      FROM vEvents E 
      INNER JOIN vClients C on E.ClientID = C.ClientID 
      WHERE E.EventDate between @startdate and @enddate 
      --AND C.Status = 0 
      AND e.SchemeID=@scheme 
      AND e.TeamID = @teamID) 

不過，我現在需要的選擇（最後EVENTDATE，以包括客戶的詳細信息列表）另一個SP的結果。其實質看起來像這樣：

SELECT TOP 1 * from vEvents E where E.ClientID = @ClientID 
order by e.EventDate desc 

如何使用第二個查詢返回第一個select語句中的所有客戶端的最後一個事件日期？

卡住！

Answer 1

PROCEDURE [dbo].[vExport_GetClientDetailsBySchemeAndTeam] 
      @startdate DATETIME = null, 
      @enddate DATETIME = NULL, 
      @scheme INT, 
      @teamID INT 
AS 
/*returns a list of current client details between two dates */ 


SELECT 
    Forename, 
    Surname, 
    Address1, 
    Address2, 
    Town, 
    County, 
    Postcode, 
    [Status], 
    Telephone, 
    EmergencyTelephone, 
    (SELECT top 1 e.EventDate from vEvents E where E.ClientID = vClients.ClientID order by e.EventDate desc) 
    --exec vExport_GetClientDetailsBySchemeAndTeam '2010-04-06 12:00:00', '2011-04-06 12:00:00', '3', '152' 
FROM 
    vClients 
WHERE 
    vClients.ClientID in 
     (SELECT DISTINCT 
      E.ClientID 
      FROM vEvents E 
      INNER JOIN vClients C on E.ClientID = C.ClientID 
      WHERE E.EventDate between @startdate and @enddate 
      --AND C.Status = 0 
      AND e.SchemeID=@scheme 
      AND e.TeamID = @teamID) 

Answer 2

你的問題的文字回答是創建一個全局臨時表，並逐步填充該表。

例如：

PROCEDURE [dbo].[vExport_GetClientDetailsBySchemeAndTeam] @startdate DATETIME = null, @enddate DATETIME = NULL, @scheme INT, @teamID INT AS /*returns a list of current client details between two dates */ 
    create table ##results(//columns you want to return) 
insert into ##results (columns) 

    SELECT Forename, Surname, Address1, Address2, Town, County, Postcode, [Status], Telephone, EmergencyTelephone --exec vExport_GetClientDetailsBySchemeAndTeam '2010-04-06 12:00:00', '2011-04-06 12:00:00', '3', '152' FROM vClients WHERE vClients.ClientID in (SELECT DISTINCT E.ClientID FROM vEvents E INNER JOIN vClients C on E.ClientID = C.ClientID WHERE E.EventDate between @startdate and @enddate --AND C.Status = 0 AND e.SchemeID=@scheme AND e.TeamID = @teamID) 

update results 
set (columns from you events table) 
from ##results r, 
vEvents e 
where e.clientid = r.clientid 

select * from ##results 

不過，我想你也可以達到你想通過加入傳統的禮物是什麼。值得看的，如果你可以從你的主查詢加入到事件表...

Answer 3

這是你的朋友：

create table #sp_output 
(
    col_1 ... , 
    ... 
    col_n ... , 
) 

INSERT #sp_output EXECUTE <your-stored-procedure-of-choice> 

需要說明的是，存儲過程必須返回一個結果設置，並且表模式必須與該結果集完全匹配。所以如果被調用的存儲過程發生了變化，你的存​​儲過程就會中斷，直到表定義更新爲匹配。

Answer 4

結合它歸結爲一個加入反對派生表：

SELECT 
    Forename, 
    Surname, 
    Address1, 
    Address2, 
    Town, 
    County, 
    Postcode, 
    [Status], 
    Telephone, 
    EmergencyTelephone, 
    E.MostRecentEventDate 
FROM 
    vClients C INNER JOIN (
     SELECT 
      ClientID, 
      MAX(EventDate) AS [MostRecentEventDate] 
     FROM vEvents 
     WHERE EventDate BETWEEN @startdate AND @enddate 
      AND SchemeID=@scheme 
      AND TeamID = @teamID 
     GROUP BY ClientID 
    ) E ON C.ClientID = E.ClientID 

使用臨時表的東西，這個簡單的將是不必要和數據庫資源，完全是浪費。

Answer 5

我看到兩個解決方案：

1. 使用表函數，而不是程序（可從SQL Server 2005中）
   
   或
   
   
2. 使用表變量使用臨時表（DECLARE @temp TABLE（ ...）），其結構與其他存儲過程的結果相同。然後使用INSERT + EXECUTE語句將其他存儲過程的結果存儲到臨時表中。
   INSERT @temp EXECUTE OtherStoredProc
   ，那麼你必須在表@temp