sql server存储过程的条件判断和事务管理

通过sql server存储过程周期性地根据条件字段值设置其他字段，包括条件判断和事务管理。实例语句如下。

数据库表（vipPoint）定义语句如下：


CREATE TABLE [dbo].[vipPoint] (


[userCode] [varchar] (50) COLLATE Chinese_PRC_CI_AS NOT NULL ,


[point] [int] NOT NULL ,


[currentStatus] [int] NOT NULL ,


[baseStatus] [int] NOT NULL


) ON [PRIMARY]


GO





存储过程语句如下：


CREATE procedure vipProcess


as


begin




if (MONTH(getdate())=7)


begin


begin transaction


update vipPoint set currentStatus=1 where baseStatus=1 and point>1000


update vipPoint set currentStatus=0 where baseStatus=1 and point<1000


update vipPoint set currentStatus=1 where baseStatus=0 and point>1500


update vipPoint set currentStatus=0 where baseStatus=0 and point<1500




/**//**update vipPoint set point=0**/


update vipPoint set point=10000000000000000000000000000


if (@@error<>0)


begin


print('rollback transaction')


rollback transaction


return 0;


end;


commit transaction


end;


end;


GO



也可以如下：


CREATE procedure vipProcess


as


begin




if (MONTH(getdate())=7)


begin


begin transaction


update vipPoint set currentStatus=case when point>=1000 then 1 when point<1000 then 0 end where baseStatus=1


update vipPoint set currentStatus=case when point>=1500 then 1 when point<1500 then 0 end where baseStatus=0




/**//**update vipPoint set point=0**/


update vipPoint set point=10000000000000000000000000000


if (@@error<>0)


begin


print('rollback transaction')


rollback transaction


return 0;


end;


commit transaction


end;


end;


GO