在存储过程中插入 DataTable 时重复条目插入

Question

我正在使用StoredProcedure 在数据库中插入DataTable，但问题是，它插入的实际条目数是要插入的DataTable 的两倍，过程如下，请指导我，如果我是使用错误的方法，为什么要复制行？所需的回报工作正常。 提前致谢

ALTER PROCEDURE [dbo].[proc_InsertStore_Recvry]
(@dt_Recovery Recovery_Store READONLY)

AS
Declare @RecoveryIDs as Table (IDs int, ClientIds int)
declare @StoreID int
declare @ClientID int
declare @Arrears decimal(18, 2)
declare @NetDues decimal(18, 2)
declare @Received decimal(18, 2)
Declare @RecoveryRecID int

begin
select * into #tempTable from @dt_Recovery

declare @Count int
set @Count= (select COUNT(*) from #tempTable)

while(@Count > 0)
begin

set @Count = @Count-1
set @ClientID = (Select top 1 ClientID from #tempTable)
set @StoredID = (Select top 1 StoredID from #tempTable where ClientID=@ClientID)
set @Arrears = (Select top 1 Arrears from #tempTable where ClientID=@ClientID)
set @NetDues = (Select top 1 NDues from #tempTable where ClientID=@ClientID)
set @Received = (Select top 1 Received from #tempTable where ClientID=@ClientID)

Insert into tblRecovery (StoreID,  ClientID, Arrears, NetDues, Received)
values (@StoreID,@ClientID,@Arrears,@NetDues,@Received)

select @RecoveryID = Scope_Identity()

insert into @RecoveryIDs (IDs,ClientIds) values (@RecoveryID, @ClientID )

delete from #tempTable where ClientID=@ClientID

end
Select * from @RecoveryIDs

Answer 1

看起来您正在使用 SQL Server。如果是，那么为什么要使用 while 循环将值插入表并返回插入的 Id？ 同样可以通过 OUTPUT 子句以更好的方式完成： OUTPUT documentation

例子：

INSERT INTO tblRecovery(StoreID,  ClientID, Arrears, NetDues, Received) OUTPUT INSERTED.ID, INSERTED.CLientId INTO @RecoveryIDs(IDs, ClientIds) SELECT StoredID, ClientID, Arrears, NDues, Received FROM #tempTable

除此之外，您的 SQL 代码似乎没有问题。那么你能把 .NET 代码也贴出来吗？