日期:2014-05-17  浏览次数:20471 次

存储过程 (批量update) 哪个好?
再接再厉。

前面我已经使用了临时表添加了 ##tmpCashPurchaseDetail (这个是我导入excel的资料)
SQL code

create proc sp_tmpCashPurchaseDetailUpdate
as
UPDATE    CPD
SET            CPD.ItemID = TMPCPD.ItemID
FROM CashPurchaseDetail AS CPD
 INNER JOIN  ##tmpCashPurchaseDetail AS TMPCPD ON CPD.CashPurchaseNo = TMPCPD.CashPurchaseNo  AND CPD.LineID = TMPCPD.LineID  
AND TMPCPD.VerifyIUD = 0
go



请问我的语句有错吗? Inner join 是对吗? 还是需要变成这样

SQL code

create proc sp_tmpCashPurchaseDetailUpdate
as
UPDATE    CPD
SET            CPD.ItemID = TMPCPD.ItemID
FROM CashPurchaseDetail AS CPD
 INNER JOIN  ##tmpCashPurchaseDetail AS TMPCPD ON CPD.CashPurchaseNo = TMPCPD.CashPurchaseNo  AND CPD.LineID = TMPCPD.LineID  AND TMPCPD.VerifyIUD = 0 Cross Join CPD
go



我的程式运行的时候会导入到##tmpCashPurchaseDetail (因为conn会断掉,关闭后会清空,所以使用##)
之后再运行存储sp_tmpCashPurchaseDetailUpdate,如果发现条件成立,那么就会update
但是我担心没有运行到全部Row,所以希望大家帮我看一下,谢谢
存储完毕之后,就会把conn断掉,那么就会自动清空了。


如果这个算批量导入,那么下面这个是不是更好(参考)这个还有分析。
SQL code

ALTER PROCEDURE [dbo].[SP_User_Hierarchy_Expend2_Dr2] (@current nvarchar(50)) 
AS
 BEGIN
   SET NOCOUNT ON
    DECLARE @lvl int, @line nvarchar(50), @parent nvarchar(50)
    CREATE TABLE #stack (item nvarchar(50), lvl int)
    CREATE TABLE #stack2 (item nvarchar(50), parent nvarchar(50), lvl int)
 
   
INSERT INTO #stack VALUES (@current, 1)
    SELECT @lvl = 1
    WHILE @lvl > 0
       BEGIN
          IF EXISTS (SELECT * FROM #stack WHERE lvl = @lvl)
             BEGIN
                SELECT @current = item
                FROM #stack
                WHERE lvl = @lvl
                SELECT @line = @current
                SELECT @parent = Parent
                 FROM SP_User_Hierarchy
                 WHERE Child=@current
                insert #stack2 values(@current, @parent, @lvl)
                DELETE FROM #stack
                WHERE lvl = @lvl
                   AND item = @current
                INSERT #stack
                   SELECT Child, @lvl + 1
                   FROM SP_User_Hierarchy
                   WHERE Parent = @current
                IF @@ROWCOUNT > 0
                   SELECT @lvl = @lvl + 1
             END
          ELSE
             SELECT @lvl = @lvl - 1
    END -- WHILE
     Begin
         SELECT  lvl, aspnet_Users.UserName as UserName, aspnet_Membership.IsApproved, aspnet_Membership.IsLockedOut, SP_User_Manager.ManagerType, SP_User_Manager.County, SP_User_Manager.Zip, SP_User_Manager.State, SP_User_Manager.LastName + ', ' + SP_User_Manager.FirstName AS FullName FROM aspnet_Users INNER JOIN aspnet_Membership ON aspnet_Users.UserId = aspnet_Membership.UserId INNER JOIN SP_User_Manager ON aspnet_Users.UserName = SP_User_Manager.UserName INNER JOIN #stack2 on item = SP_User_Manager.UserName
         
    END
 END
 




------解决方案--------------------
#1.如果此存储过程是放在一个事务中执行,#4出错时会回滚.
#2.如果存储过程中的#3,#4步放在一个事务中,#4出错时会回滚.
begin tran
--exec 你有存储过程
end tran