When a specific field in the SQL Server trigger table is updated, the update trigger is triggered.

CopyCodeThe Code is as follows: Create trigger tr_mastertable_update
On mastertable
After update
As
If Update ([type]) -- this trigger is triggered only when the type field is updated.
Insert into masterlogtable
Select
ID
, (Case [type] When 1 then 'type1'
When 2 then 'type2'
When 3 then 'type3'
When 4 then 'type4'
Else 'typedefault'
End)
, Name
From inserted
Go

In addition, the insert and update data are stored in the temporary table. Therefore, you can use inserted to retrieve the data. When you delete the data, you can use deleted to retrieve the deleted data.
Reprinted please indicate the source: http://blog.csdn.net/tjvictor