数据库触发器和作业结合讲解

文章作者 100test 发表时间 2007:08:06 13:21:07
来源 100Test.Com百考试题网

/*--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_0delete 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

0select @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(0select 1 from msdb..sysjobs where name=@jobname)
exec msdb..sp_0delete_job @job_name=@jobname

if @is_0delete=1 return

--创建作业
exec msdb..sp_add_job @job_name=@jobname,@0delete_level=1

--创建作业步骤
declare @sql varchar(800)
0select @sql=insert accepteTab(name,SendUnit,AcceptUnit,Content)
0select 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_0update on sendTab
for insert,0update
as
declare @id int
declare tb cursor local for 0select 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_0delete on sendTab
for 0delete
as
declare @id int
declare tb cursor local for 0select id from 0deleted
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
0select 文书1,2004/5/1 12:00:00,UnitA,UnitB,txt
union all 0select 文书2,2004/5/12 12:00:00,UnitA,UnitB,txt
union all 0select 文书3,2004/5/21 12:00:00,UnitA,UnitB,txt

--修改
0update sendTab set name=档案1,SendTime=2004/5/1 15:00:00
where id=1

--删除
0delete sendtab where id=3
go
--删除测试
0drop table sendTab,accepteTab
0drop proc p_JobSet

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