存储过程中的简单事务处理---SQLServer2005系列

一. 添加记录
需要事务支持,如果上下文环境中不存在事务,新启动一个事务,否则利用已存在的事务.
-- =============================================
-- Author: <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
CREATE PROCEDURE [dbo].[AddJob]
@jobName nvarchar(50),
@added bit output
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;

DECLARE @errorCode int
SET @errorCode = 0

--Transaction identity. 1:Created a new transaction. 0:Use old transaction.
DECLARE @tranStarted bit
SET @tranStarted = 0

--Create a new transaction if there is not a transaction.
IF( @@TRANCOUNT = 0 )
BEGIN
BEGIN TRANSACTION
SET @tranStarted = 1
END
ELSE
SET @tranStarted = 0

--Adding operation.
INSERT INTO dbo.Job(JobName)
VALUES (@jobName)

IF ( @@ERROR <> 0 )
BEGIN
SET @errorCode = -1
GOTO Cleanup
END

IF ( @tranStarted = 1 )
BEGIN
SET @tranStarted = 0
COMMIT TRANSACTION
END

SET @added = 1
RETURN(0)

--Error handler.
Cleanup:
IF( @tranStarted = 1 )
BEGIN
SET @tranStarted = 0
ROLLBACK TRANSACTION
END

SET @added = 0
RETURN @errorCode
END

二. 删除记录(同上)
需要事务支持,如果上下文环境中不存在事务,新启动一个事务,否则利用已存在的事务.
三. 修改记录(同上)
需要事务支持,如果上下文环境中不存在事务,新启动一个事务,否则利用已存在的事务.

[align=left]四. 查询记录[/align]
[align=left] 不需要事务支持.[/align]
[align=left]-- =============================================[/align]
[align=left]-- Author: <Author,,Name>[/align]
[align=left]-- Create date: <Create Date,,>[/align]
[align=left]-- Description: <Description,,>[/align]
[align=left]-- =============================================[/align]
[align=left]CREATE PROCEDURE [dbo].[GetAllJob][/align]
[align=left]AS[/align]
[align=left]BEGIN[/align]
[align=left] -- SET NOCOUNT ON added to prevent extra result sets from[/align]
[align=left] -- interfering with SELECT statements.[/align]
[align=left] SET NOCOUNT ON;[/align]
[align=left] [/align]
[align=left] SELECT JobId, JobName [/align]
[align=left] FROM Job[/align]
[align=left]END[/align]