触发器记录表某一个字段数据变化的日志 包括插入insert 修改update 删除delete 操作

本文参考:http://www.cnblogs.com/lyhabc/articles/3236985.html

-- 建跟踪触发器
ALTER trigger tr_sto
on sto after update,insert,delete
as
begin
declare @di table(et NVARCHAR(max),pt NVARCHAR(max),ei NVARCHAR(max))
insert into @di exec('dbcc inputbuffer(@@spid)')

declare @op varchar(10)
select @op=case when exists(select 1 from inserted) and exists(select 1 from deleted)
then 'Update'
when exists(select 1 from inserted) and not exists(select 1 from deleted)
then 'Insert'
when not exists(select 1 from inserted) and exists(select 1 from deleted)
then 'Delete' end

if @op ='Update'
--IF UPDATE(de) --关键字段发生表更记录。
--BEGIN
BEGIN
insert into log_sto
(operate,id,old_de,new_de,spid,login_name,prog_name,hostname,ipaddress,runsql,UDate)
select @op,n.id,o.de,n.de,@@spid,
(select login_name from sys.dm_exec_sessions where session_id=@@spid),
(select program_name from sys.dm_exec_sessions where session_id=@@spid),
(select hostname from sys.sysprocesses where spid=@@spid),
(select client_net_address from sys.dm_exec_connections where session_id=@@spid),
(select top 1 isnull(ei,'') from @di),
getdate()
from inserted n
left join deleted o on o.id=n.id
WHERE ISNULL(o.de,'')<>ISNULL(n.de,'') --只记录修改字段old值和new值不一样的情况。
--WHERE CHECKSUM(o.de)<>CHECKSUM(n.de)
END
--end
ELSE if @op ='Insert'
begin
insert into log_sto
(operate,id,old_de,new_de,spid,login_name,prog_name,hostname,ipaddress,runsql,UDate)
select @op,n.id,o.de,n.de,@@spid,
(select login_name from sys.dm_exec_sessions where session_id=@@spid),
(select program_name from sys.dm_exec_sessions where session_id=@@spid),
(select hostname from sys.sysprocesses where spid=@@spid),
(select client_net_address from sys.dm_exec_connections where session_id=@@spid),
(select top 1 isnull(ei,'') from @di),
getdate()
from inserted n
left join deleted o on o.id=n.id
end
else
begin
insert into log_sto
(operate,id,old_de,new_de,spid,login_name,prog_name,hostname,ipaddress,runsql,UDate)
select @op,o.id,o.de,null,@@spid,
(select login_name from sys.dm_exec_sessions where session_id=@@spid),
(select program_name from sys.dm_exec_sessions where session_id=@@spid),
(select hostname from sys.sysprocesses where spid=@@spid),
(select client_net_address from sys.dm_exec_connections where session_id=@@spid),
(select top 1 isnull(ei,'') from @di),
getdate()
from deleted o
end
end
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