Sql server 如何使用newid（）为存储过程变量赋值？

我正在尝试生成一个新的GUID，并将该值分配给

NewReportID

。但是，如果我用

newid（）

替换过程中的每一处

@NewReportID

，我不确定它是否会为每一行生成一个新的GUID

要生成一个GUID并为NewReportID分配GUID的值，我需要做什么

我尝试了变量声明：

@NewReportID varchar（50）=newid（）

，但这给了我很多错误

ALTER PROCEDURE [dbo].[AmendInsertDuplicateFields] (@ReportID varchar(50), @NewReportID varchar(50))
AS

    Begin           

INSERT INTO [MVCOmar].[dbo].[PrideMVCCollisionBegin]
  ([ReportID], [LocalIncidentNum], [version], [MTOReferenceNo], [Submitted])
SELECT @NewReportID, [LocalIncidentNum], [version], [MTOReferenceNo], [Submitted]
FROM [MVCOmar].[dbo].[PrideMVCCollisionBegin] WHERE [ReportID]=@ReportID;

INSERT INTO [MVCOmar].[dbo].[PrideMVCCollisionDetails] ([Classification]      ,
    [ReportType]      ,[CollisionDate]      ,[CollisionDay]      ,
    [CollisionTime]      ,[CollisionLoc]      ,[ImpactLoc]      ,[ThruLaneNo]      ,
    [Weather1]      ,[Weather2]      ,[Light]      ,[TrafficControl]      ,
    [TrafficControlCond]      ,[RoadChar1]      ,[RoadChar2]      ,
    [RoadSurface1]      ,[RoadSurface2]      ,[RoadCond1]      ,[RoadCond2]      ,
    [RoadSurfaceCond1]      ,[RoadSurfaceCond2]      ,[RoadAlignment1]      ,
    [RoadAlignment2]      ,[RoadPavementMarking1]      ,[RoadPavementMarking2]      ,
    [OtherCollisionLoc]      ,[OtherImpactLoc]      ,[OtherWeather1]      ,
    [OtherWeather2]      ,[OtherLight]      ,[OtherTraffic]      ,
    [OtherRoadSurface1]      ,[OtherRoadSurface2]      ,[OtherRoadSurfaceCond1]      ,
    [OtherRoadSurfaceCond2]      ,[OtherClassification]      ,
    [DiagramDescription]      ,[R1NumLanes]      ,[R1MaxSpeed]      ,
    [R1AdviseSpeed]      ,[R2NumLanes]      ,[R2MaxSpeed]      ,[R2AdviseSpeed]      ,
    [NumInvolved]      ,[OfficerID]      ,[Checked]      ,[LastModified]      ,
    [LastModifiedBy]      ,[StartTime]      ,[EndTime]      ,[Display]      ,
    [ReportID]      ,[InitialImpactType]      ,[OtherInitialImpactType]      ,
    [SelfReported])
SELECT [Classification]      ,[ReportType]      ,[CollisionDate]      ,
    [CollisionDay]      ,[CollisionTime]      ,[CollisionLoc]      ,[ImpactLoc]      ,
    [ThruLaneNo]      ,[Weather1]      ,[Weather2]      ,[Light]      ,
    [TrafficControl]      ,[TrafficControlCond]      ,[RoadChar1]      ,
    [RoadChar2]      ,[RoadSurface1]      ,[RoadSurface2]      ,[RoadCond1]      ,
    [RoadCond2]      ,[RoadSurfaceCond1]      ,[RoadSurfaceCond2]      ,
    [RoadAlignment1]      ,[RoadAlignment2]      ,[RoadPavementMarking1]      ,
    [RoadPavementMarking2]      ,[OtherCollisionLoc]      ,[OtherImpactLoc]      ,
    [OtherWeather1]      ,[OtherWeather2]      ,[OtherLight]      ,
    [OtherTraffic]      ,[OtherRoadSurface1]      ,[OtherRoadSurface2]      ,
    [OtherRoadSurfaceCond1]      ,[OtherRoadSurfaceCond2]      ,
    [OtherClassification]      ,[DiagramDescription]      ,[R1NumLanes]      ,
    [R1MaxSpeed]      ,[R1AdviseSpeed]      ,[R2NumLanes]      ,[R2MaxSpeed]      ,
    [R2AdviseSpeed]      ,[NumInvolved]      ,[OfficerID]      ,[Checked]      ,
    [LastModified]      ,[LastModifiedBy]      ,[StartTime]       

    End

---

使用正确的数据类型<代码>唯一标识符

declare @NewReportID uniqueidentifier 
set @NewReportID = NEWID()

---

您使用的是什么风格的sql server？我试过了你说的错误：

我尝试了变量声明：@NewReportID varchar（50）=newid（），但这给了我很多错误

ALTER PROCEDURE [dbo].[AmendInsertDuplicateFields] (@ReportID varchar(50), @NewReportID varchar(50))
AS

    Begin           

INSERT INTO [MVCOmar].[dbo].[PrideMVCCollisionBegin]
  ([ReportID], [LocalIncidentNum], [version], [MTOReferenceNo], [Submitted])
SELECT @NewReportID, [LocalIncidentNum], [version], [MTOReferenceNo], [Submitted]
FROM [MVCOmar].[dbo].[PrideMVCCollisionBegin] WHERE [ReportID]=@ReportID;

INSERT INTO [MVCOmar].[dbo].[PrideMVCCollisionDetails] ([Classification]      ,
    [ReportType]      ,[CollisionDate]      ,[CollisionDay]      ,
    [CollisionTime]      ,[CollisionLoc]      ,[ImpactLoc]      ,[ThruLaneNo]      ,
    [Weather1]      ,[Weather2]      ,[Light]      ,[TrafficControl]      ,
    [TrafficControlCond]      ,[RoadChar1]      ,[RoadChar2]      ,
    [RoadSurface1]      ,[RoadSurface2]      ,[RoadCond1]      ,[RoadCond2]      ,
    [RoadSurfaceCond1]      ,[RoadSurfaceCond2]      ,[RoadAlignment1]      ,
    [RoadAlignment2]      ,[RoadPavementMarking1]      ,[RoadPavementMarking2]      ,
    [OtherCollisionLoc]      ,[OtherImpactLoc]      ,[OtherWeather1]      ,
    [OtherWeather2]      ,[OtherLight]      ,[OtherTraffic]      ,
    [OtherRoadSurface1]      ,[OtherRoadSurface2]      ,[OtherRoadSurfaceCond1]      ,
    [OtherRoadSurfaceCond2]      ,[OtherClassification]      ,
    [DiagramDescription]      ,[R1NumLanes]      ,[R1MaxSpeed]      ,
    [R1AdviseSpeed]      ,[R2NumLanes]      ,[R2MaxSpeed]      ,[R2AdviseSpeed]      ,
    [NumInvolved]      ,[OfficerID]      ,[Checked]      ,[LastModified]      ,
    [LastModifiedBy]      ,[StartTime]      ,[EndTime]      ,[Display]      ,
    [ReportID]      ,[InitialImpactType]      ,[OtherInitialImpactType]      ,
    [SelfReported])
SELECT [Classification]      ,[ReportType]      ,[CollisionDate]      ,
    [CollisionDay]      ,[CollisionTime]      ,[CollisionLoc]      ,[ImpactLoc]      ,
    [ThruLaneNo]      ,[Weather1]      ,[Weather2]      ,[Light]      ,
    [TrafficControl]      ,[TrafficControlCond]      ,[RoadChar1]      ,
    [RoadChar2]      ,[RoadSurface1]      ,[RoadSurface2]      ,[RoadCond1]      ,
    [RoadCond2]      ,[RoadSurfaceCond1]      ,[RoadSurfaceCond2]      ,
    [RoadAlignment1]      ,[RoadAlignment2]      ,[RoadPavementMarking1]      ,
    [RoadPavementMarking2]      ,[OtherCollisionLoc]      ,[OtherImpactLoc]      ,
    [OtherWeather1]      ,[OtherWeather2]      ,[OtherLight]      ,
    [OtherTraffic]      ,[OtherRoadSurface1]      ,[OtherRoadSurface2]      ,
    [OtherRoadSurfaceCond1]      ,[OtherRoadSurfaceCond2]      ,
    [OtherClassification]      ,[DiagramDescription]      ,[R1NumLanes]      ,
    [R1MaxSpeed]      ,[R1AdviseSpeed]      ,[R2NumLanes]      ,[R2MaxSpeed]      ,
    [R2AdviseSpeed]      ,[NumInvolved]      ,[OfficerID]      ,[Checked]      ,
    [LastModified]      ,[LastModifiedBy]      ,[StartTime]       

    End

但这对我有用

---

使用

VARCHAR（）

有什么原因吗

理想情况下，您应该使用

uniqueidentifier

类型

DECLARE
  @myGUID    uniqueidentifier
SELECT
  @myGUID    = NewID()

编辑

当您使用

VARCHAR（）

时，您可以将其转换为字符串。这比任何真正的技术问题都更浪费空间

DECLARE
  @myGUID    VARCHAR(50)
SELECT
  @myGUID    = CONVERT(varchar(50), @myid)

在SP中，@newReportID是一个输入参数。因此，您可以将SP更改为不需要输入，或在输入之前设置它

使用当前SP

DECLARE
  @myGUID    VARCHAR(50)
SELECT
  @myGUID    = CONVERT(varchar(50), @myid)

EXEC [dbo].[AmendInsertDuplicateFields] @reportID, @myGUID

更改SP

ALTER PROCEDURE [dbo].[AmendInsertDuplicateFields] (@ReportID varchar(50))
AS
BEGIN

DECLARE
  @NewReportID VARCHAR(50)
SELECT
  @NewReportID = CONVERT(varchar(50), @myid)

-- Then use @NewReportID onwards in the SP

并仅使用一个参数调用SP

EXEC [dbo].[AmendInsertDuplicateFields] @reportID

---

我是否必须像您一样单独声明newreportID，还是只添加SET@newreportID…..声明它-->设置它-->使用它：）您真的想重复我的答案吗；）不幸的是，previosu程序员没有使用正确的数据类型，简单的更改（如数据类型更改）非常耗时，因为我的应用程序包含60多个sql表和60多个存储过程…@mouters-我启动后您就完成了。并发问题；）+1对于详细答案以及解决方案的替代方案，这是对问题库的一个很好的补充。不幸的是，previosu程序员没有使用正确的数据类型，而简单的更改（如数据类型更改）非常耗时，因为我的应用程序有60多个sql表和60多个存储过程……我可以更改过程[dbo]吗。[AmendInsertDuplicateFields]（@ReportID varchar（50），@NewReportID varchar（50））设置@NewReportID=newid（）；由于所有的好答案，你们很难选择最佳答案……因为简单的解决方案而被接受为答案，幸运的是select语句还回答了我的一个小问题，即如何返回NewReportID值：SqlDataReader=command.ExecuteReader（）；while（reader.Read（））{ NeGuiDe=读者[TopReadd ] ] toStReg（；）；纳达尔；“因为所有好的答案，你们很难选择最佳答案”——你是否考虑过对那些你认为是有用的（包括这一个）的答案进行投票？？您已经问了70个问题，但只投了16次赞成票。投票是免费的，您每天最多有40个，它为您提供了机会，在有用的地方奖励人们的努力。显然，您不必投票，这是可选的，但可能需要考虑一下……您使用的是什么样的sql server？