捕获mssqlservice 修改表后的数据，统一存储到特定的表中，之后通过代码同步两个库的数据

drop  database  T_Mytest
 
 
create  database  T_Mytest
 
 -- 创建修改表
 use T_Mytest 
  create table Mytest
  (
   id  int null ,
   name  nvarchar (20) null  ,
   OwndStore  int null 
  
  )

-- 创建记录修改了那个数据库,那张表的记录
create table testdatabaseLog
  (
   ID  int   identity  not null ,
    State int null ,-- 同步状态 0表示初始数据没有同步 ，1 表示已经同步需要插入的文件数据
   
   ChangeTableName nvarchar (25) null , -- 更新了哪个数据库表
   createdatetime datetime  null , 
   ActionType int  null ,  -- 1插入 2更新  3 删除 
   ActionName  nvarchar(20) null ,
   Content  nvarchar (max) null  ,  -- 更新后的内容
   FromStore  int null  ,  --  该数据来自那个门店数据库  标识
   ToStore  int null  , -- 同步到那个门店进行处理
  )
go 

CREATE TRIGGER [dbo].[itrg_triggerTest]  ON [dbo].[Mytest]
 after  insert , update ,delete
AS
set nocount on 
--查询该触发器触发的表
--SELECT @@PROCID, OBJECT_NAME( @@PROCID ) 
 declare  @tableName nvarchar(25)  ;

--宣告变量 
DECLARE @D BIT = 0 
DECLARE @I BIT = 0 

declare @content nvarchar(max)  ;
declare @actiontype int  ;
declare @actionName nvarchar(15)  ;
IF EXISTS(SELECT TOP 1 1 FROM DELETED) 
begin 
SET @D = 1 
end 

IF EXISTS(SELECT TOP 1 1 FROM INSERTED) 
begin
SET @I = 1 
end 


IF @I = 1 AND @D = 0 
begin 
 set @actiontype=1  ;
  set @actionName=‘Insert‘
--select N‘插入‘+‘insert into ‘
 select  @content= (select   * from inserted for xml path)+‘‘
  
 -- select   * from inserted for xml path(@tableName),root(‘insert‘)
end 
 else  IF @I = 1 AND @D = 1 
begin 
 set @actiontype=2  ;
  set @actionName=‘Update‘ ;
 select  @content= (select   * from inserted for xml path)+‘‘ ;
 
end 
else 
begin 

 set @actiontype=3  ;
  set @actionName=‘Delete‘
--select N‘删除‘+‘insert into ‘
 select  @content= (select   * from deleted for xml path)+‘‘ ;
end 


if ( @content is not null )
begin 

SELECT  @tableName =OBJECT_SCHEMA_NAME( parent_id ) + ‘.‘ + OBJECT_NAME( parent_id )  FROM sys.triggers WHERE object_id = @@PROCID

insert into  testdatabaseLog   
  (
  ChangeTableName ,
  createdatetime ,  
   ActionType , 
   ActionName  , 
   content,FromStore)
   values  ( @tableName ,GETDATE() , @actiontype, @actionName  ,@content,   1)  ;
end 


GO

-- 测试数据
  insert into Mytest values (1,‘苹果‘,1)
  insert into Mytest values (2,‘雪梨‘,1)
  insert into Mytest values (3,‘香蕉‘,1)