兴国资源网 Design By www.nnzcdc.com
复制代码 代码如下:
--方式一
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[USP_ProcedureWithTransaction_Demo]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[USP_ProcedureWithTransaction_Demo]
GO
-- =============================================
-- Author: <ChengXiaoming>
-- Create date: <2010-06-11>
-- Description: <Demo:存储过程中使用事务>
-- =============================================
Create PROCEDURE [dbo].[USP_ProcedureWithTransaction_Demo]
As
Begin
SET XACT_ABORT ON
Begin Transaction
Insert Into Lock(LockTypeID) Values('A')--此语句将出错,LockTypeID为Int类型
Update Lock Set LockTypeID = 2 Where LockID = 32
Commit Transaction
SET XACT_ABORT OFF
End
GO

--方式二
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[USP_ProcedureWithTransaction_Demo]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[USP_ProcedureWithTransaction_Demo]
GO
-- =============================================
-- Author: <ChengXiaoming>
-- Create date: <2010-06-11>
-- Description: <Demo:存储过程中使用事务>
-- =============================================
Create PROCEDURE [dbo].[USP_ProcedureWithTransaction_Demo]
As
Begin
Begin Transaction
Insert Into Lock(LockTypeID) Values('A')--此语句将出错,LockTypeID为Int类型
Update Lock Set LockTypeID = 1 Where LockID = 32
Commit Transaction
If(@@ERROR <> 0)
Rollback Transaction
End
GO

--方式三
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[USP_ProcedureWithTransaction_Demo]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[USP_ProcedureWithTransaction_Demo]
GO
-- =============================================
-- Author: <ChengXiaoming>
-- Create date: <2010-06-11>
-- Description: <Demo:存储过程中使用事务>
-- =============================================
Create PROCEDURE [dbo].[USP_ProcedureWithTransaction_Demo]
As
Begin
Begin Try
Begin Transaction
Update Lock Set LockTypeID = 1 Where LockID = 32--此语句将出错,LockTypeID为Int类型
Insert Into Lock(LockTypeID) Values('A')
Commit Transaction
End Try
Begin Catch
Rollback Transaction
End Catch
End
GO

Exec [USP_ProcedureWithTransaction_Demo]
兴国资源网 Design By www.nnzcdc.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除!
兴国资源网 Design By www.nnzcdc.com

RTX 5090要首发 性能要翻倍!三星展示GDDR7显存

三星在GTC上展示了专为下一代游戏GPU设计的GDDR7内存。

首次推出的GDDR7内存模块密度为16GB,每个模块容量为2GB。其速度预设为32 Gbps(PAM3),但也可以降至28 Gbps,以提高产量和初始阶段的整体性能和成本效益。

据三星表示,GDDR7内存的能效将提高20%,同时工作电压仅为1.1V,低于标准的1.2V。通过采用更新的封装材料和优化的电路设计,使得在高速运行时的发热量降低,GDDR7的热阻比GDDR6降低了70%。