Question

当我通过SQL Server Management Studio 2005执行FIRST和SECOND QUERY时，它们可以正常工作并修改正确的数据。但是，当我尝试执行整个SP时，我没有错误，但只有FIRST实际上修改了它应该的数据而SECOND没有。我研究了THIS Stackoverflow article并认为我的查询中也许存在混淆，但我不确定如何修复它，因为我不是简单地声明变量

注意：

*这与完全正常的代码之间的唯一区别是在FIRST和SECOND中使用LEFT命令。

*当FIRST查询在＆lt; 1中执行时，第二个查询需要一点多时间。我不确定这是否会导致问题。

*当我执行整个SP时，它在＆lt; 1中执行，表明它正在跳过SECOND，但我不知道为什么。

*不返回任何错误

USE [abc]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:      <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
ALTER PROCEDURE [dbo].[bca]
    -- Add the parameters for the stored procedure here

AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.


------------------------FIRST------------------------
UPDATE p
SET DATAREVISIONTYPE = 'Transfer'
FROM cba as p
WHERE DATAREVISIONTYPE  = 'Delete' AND
(SELECT COUNT([OriginalUserId]) FROM cba WHERE DataRevisionType = 'Add' AND FirstName = p.FirstName 
AND LastName = p.LastName AND EmployeeEmailAddress = p.EmployeeEmailAddress AND EmployeeBirthdate = LEFT(p.EmployeeBirthdate, 4))> 0

------------------------SECOND-----------------------
UPDATE O
SET DATAREVISIONTYPE = 'Modify'
FROM cba as O
WHERE DATAREVISIONTYPE = 'Add' AND
(SELECT COUNT([OriginalUserId]) FROM cba WHERE DataRevisionType = 'Transfer' AND FirstName = O.FirstName 
AND LastName = O.LastName AND EmployeeEmailAddress = O.EmployeeEmailAddress AND LEFT(EmployeeBirthdate, 4) = O.EmployeeBirthdate)> 0

END

编辑：没有LEFT命令的原始代码

USE [abc]
GO
/****** Object:  StoredProcedure [dbo].[bca]    Script Date: 07/02/2013 10:14:20 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:      <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
ALTER PROCEDURE [dbo].[bca]
    -- Add the parameters for the stored procedure here

AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.

UPDATE p
SET DATAREVISIONTYPE = 'Transfer'
FROM cba as p
WHERE DATAREVISIONTYPE  = 'Delete' AND
(SELECT COUNT([OriginalUserId]) FROM cba WHERE DataRevisionType = 'Add' AND FirstName = p.FirstName 
AND LastName = p.LastName AND EmployeeEmailAddress = p.EmployeeEmailAddress AND EmployeeBirthdate = p.EmployeeBirthdate)> 0

UPDATE O
SET DATAREVISIONTYPE = 'Modify'
FROM cba as O
WHERE DATAREVISIONTYPE = 'Add' AND
(SELECT COUNT([OriginalUserId]) FROM cba WHERE DataRevisionType = 'Transfer' AND FirstName = O.FirstName 
AND LastName = O.LastName AND EmployeeEmailAddress = O.EmployeeEmailAddress AND EmployeeBirthdate = O.EmployeeBirthdate)> 0


END

Answer 1

查看您的代码，我认为LEFT功能导致不返回任何行。您实际上正在使用Birthdate（样本'0206A'）加入LEFT（p.EmployeeBirthdate，4）（样本'0206'）。子查询没有返回任何行，因此不执行任何更新。

SQL查询有效，但SP作为一个整体没有

1 个答案: