事务实例

begin try   
begin transaction  --开始事务
DECLARE @myMemberID NVARCHAR(36) ,--用户ID
            @myBizID NVARCHAR(36) ,
            @myBizType NVARCHAR(36)

 --业务ID			
        SET @myMemberID = ‘2‘
        SET @myBizID = ‘2‘
        SET @myBizType = ‘2‘
        IF EXISTS ( SELECT  1
                    FROM    D_MemberAdmire
                    WHERE   MemberID = @myMemberID
                            AND BizID = @myBizID ) 
            UPDATE  dbo.D_MemberAdmire
            SET     IsDel = CASE WHEN IsDel = 1 THEN 0
                                 ELSE 1
                            END                  
            WHERE   MemberID = @myMemberID
                    AND BizID = @myBizID;     

					                     
        ELSE 
            INSERT  INTO D_MemberAdmire
                    ( ID ,
                      BizType ,
                      BizID ,
                      MemberID ,
                      Status ,
                      IsDel
                    )
            VALUES  ( NEWID() ,
                      @myBizType ,
                      @myBizID ,
                      @myMemberID ,
                      1 ,
                      ‘a‘ 
                    );
					--UPDATE dbo.D_MemberAdmire SET Status=‘a‘--测试语句
commit transaction --提交事务
end try 
begin catch --抓取异常
select ERROR_NUMBER() as errornumber --查询错误代码
rollback transaction --回滚事务
end catch