MS SQL 当记录不存在时插入insert INTO not exists

INSERT INTO dbo.[T_DabaoTemp] ([PType]
,[pID]
,[NewVersion]
,[ParentCode]
,[Addtime])
select 0,5,'2.0.1','0_3',GETDATE() WHERE not exists (
select 1 from [T_DabaoTemp] where [PType]=0 and [pID]=5 and [NewVersion]='2.0.1')

存储过程

USE [UMoneyMain]
GO
/****** Object: StoredProcedure [dbo].[UMoney_T_DabaoTemp_Insert] Script Date: 04/09/2014 10:19:28 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
/*
----------------------------------------------------------------------------------------------------
-- Date Created: 2014年4月8日 16:27
-- Created By:王朝理
-- Purpose: 向表 T_DabaoTemp 中插入数据
-- 表说明
----------------------------------------------------------------------------------------------------
*/
CREATE PROCEDURE [dbo].[Temp_Insert]
(
@Id int output, --
@PType int = 0 , --
@pID int = 0 , --
@NewVersion varchar(50) = null , --
@ParentCode varchar(50) = null , --
@Addtime datetime = null --
)
AS
SET NOCOUNT ON
if (@Addtime is null)
begin
set @Addtime = getdate()
end
INSERT INTO dbo.[T_DabaoTemp] ([PType]
,[pID]
,[NewVersion]
,[ParentCode]
,[Addtime])
select @PType,@pID,@NewVersion,@ParentCode,@Addtime WHERE not exists (
select 1 from [T_DabaoTemp] where [PType]=@PType and [pID]=@pID and [NewVersion]=@NewVersion)

SET @Id = SCOPE_IDENTITY()