根据表中记录的变化情况自动维护作业

/*--作业处理实例

?根据sendTab的SendTime定制作业
?并且在该作业完成时,可以自动删除作业
--*/

--示例

--测试表
create table sendTab(ID int identity(1,1),Name varchar(10)
?,SendTime datetime,AcceptUnit varchar(10)
?,SendUnit varchar(10),Content varchar(8000))

create table accepteTab(ID int identity(1,1),Name varchar(10)
?,SendUnit varchar(10),AcceptUnit varchar(10),Content varchar(8000))
go

--创建处理的存储过程
create proc p_JobSet
@id int,???--要处理的sendTab的id
@is_delete bit=0?--是否仅删除,为0则否,为1则是
as
declare @dbname sysname,@jobname sysname
?,@date int,@time int

select @jobname='定时发送作业_'+cast(@id as varchar)
?,@date=convert(varchar,SendTime,112)
?,@time=replace(convert(varchar,SendTime,108),':','')
from sendTab where id=@id

if exists(select 1 from msdb..sysjobs where name=@jobname)
?exec msdb..sp_delete_job @job_name=@jobname

if @is_delete=1 return

--创建作业
exec msdb..sp_add_job @job_name=@jobname,@delete_level=1

--创建作业步骤
declare @sql varchar(800)
select @sql='insert accepteTab(name,SendUnit,AcceptUnit,Content)
??select name,AcceptUnit,SendUnit,Content from sendTab where id='
??+cast(@id as varchar)
?,@dbname=db_name()

exec msdb..sp_add_jobstep @job_name=@jobname,
?@step_name = '发送处理步骤',
?@subsystem = 'TSQL',
?@database_name=@dbname,
?@command = @sql,
?@retry_attempts = 5, ??--重试次数
?@retry_interval = 5? ??--重试间隔

--创建调度
EXEC msdb..sp_add_jobschedule @job_name = @jobname,
?@name = '时间安排',
?@enabled = 1,
?@freq_type = 1,
?@active_start_date = @date,
?@active_start_time = @time

-- 添加目标服务器
EXEC msdb.dbo.sp_add_jobserver
?@job_name = @jobname ,
?@server_name = N'(local)'
go

--创建处理的触发器(新增/修改)
create trigger tr_insert_update on sendTab
for insert,update
as
declare @id int
declare tb cursor local for select id from inserted
open tb
fetch next from tb into @id
while @@fetch_status=0
begin
?exec p_JobSet @id
?fetch next from tb into @id
end
close tb
deallocate tb
go

--创建处理的触发器(删除)
create trigger tr_delete on sendTab
for delete
as
declare @id int
declare tb cursor local for select id from deleted
open tb
fetch next from tb into @id
while @@fetch_status=0
begin
?exec p_JobSet @id,1
?fetch next from tb into @id
end
close tb
deallocate tb
go

--测试

--插入数据
insert sendTab
select '文书1','2004/5/1 12:00:00','UnitA','UnitB','txt'
union all select '文书2','2004/5/12 12:00:00','UnitA','UnitB','txt'
union all select '文书3','2004/5/21 12:00:00','UnitA','UnitB','txt'

--修改
update sendTab set name='档案1',SendTime='2004/5/1 15:00:00'
where id=1

--删除
delete sendtab where id=3
go
--删除测试
drop table sendTab,accepteTab
drop proc p_JobSet