由于之前的需要,禁止了复制架构更改,以至在发布中添加一个字段,并不会同步到订阅中,而现在又在订阅中添加了一个同名字段,怎么使这发布和订阅的两个字段建立同步关系呢?
下面就测试更改:此次发布类型为事务复制的可更新订阅,其他类型的发布没有测试。
首先建立事务复制的可更新订阅,建立好之后。
在发布创建一张测试表:
- CREATE TABLE [dbo].[DemoTab](
- [Guid] [uniqueidentifier] NOT NULL,
- [SID] [varbinary](85) NOT NULL,
- [Title] [nvarchar](100) NOT NULL,
- CONSTRAINT [PK_DemoTab] PRIMARY KEY CLUSTERED ([SID] ASC,[Guid] ASC)
- ) ON [PRIMARY]
- GO
- ALTER TABLE [dbo].[DemoTab] ADD CONSTRAINT [DF_DemoTab_Guid] DEFAULT (newsequentialid()) FOR [Guid]
- GO
- ALTER TABLE [dbo].[DemoTab] ADD CONSTRAINT [DF_DemoTab_SID] DEFAULT (suser_sid()) FOR [SID]
- GO
将表添加发布,并初始化该表:
- Exec sp_addarticle
- @publication = 'publication'
- , @article = N'DemoTab'
- , @source_object = N'DemoTab'
- , @source_owner = N'dbo'
- , @schema_option = 0x0000000008037CDF
- , @vertical_partition = N'true'
- GO
- Exec sp_refreshsubscriptions 'publication'
- GO
- Exec sp_startpublication_snapshot 'publication'
- GO
分表在发布和订阅都测试,确认同步正常:
- INSERT INTO [DemoTab](Guid,SID,Title) select NEWID(),SUSER_SID(),'test'
- UPDATE [DemoTab] SET Title = 'KK'
- DELETE FROM [DemoTab]
现在禁用 "复制架构更改"
也可以用脚本禁止:
- -- 禁止 "复制架构更改"
- EXEC sp_changepublication @publication = N'publication', @property = N'replicate_ddl', @value = 0
现在分别在发布数据库和订阅数据库执行增加字段,因为架构不同步,所以并不会冲突。
- ALTER TABLE dbo.[DemoTab] ADD TEST INT NULL
增加后,只要不对新增的列 test 操作,复制仍正常。但要禁止客户对该表进行操作,因为更改过程中涉及的对象要更改,别面出错!
首先介绍主要参考的3个存储过程,都在发布数据库执行.(注:可执行查看,但生成的脚本不要执行)
- --订阅的所有同步存储过程.生成脚本在订阅库执行
- EXEC sp_scriptpublicationcustomprocs N'publication'
- --发布中的冲突表.生成脚本在发布库执行
- EXEC sp_scriptsubconflicttable @publication = 'publication', @article = 'DemoTab'
- --订阅触发器.生成脚本在订阅库执行
- EXEC sp_script_synctran_commands @publication = 'publication', @article = 'DemoTab'
将新增的列添加到发布项目中(在发布数据库执行)
- --查看发布列的信息
- select name,column_id from sys.columns where object_id=object_id('DemoTab')
- select artid from sysarticles where name='DemoTab'
- select * from sysarticlecolumns where artid=1044
从上面可以知道,字段 [TEST] 的id=8 , 表 [DemoTab] 的发布项目编号 artid = 1044,当前字段[TEST]并未添加到发布表中,下面将该列添加到发布
- insert into sysarticlecolumns select 1044,8,0,0,0
现在执行上面所说的3个存储过程,在发布数据库执行。该存储过程生成订阅的同步存储过程,生成的脚本在订阅数据库执行(手动应用快照)
- EXEC sp_scriptpublicationcustomprocs N'publication'
- --
- -- 来自数据库 'publisherdb'、发布 'publication' 的事务复制自定义过程:
- --
- ----
- ---- 项目 'DemoTab' 的复制自定义过程:
- ----
- if object_id(N'[sp_MSins_dboDemoTab]', 'P') > 0
- drop proc [sp_MSins_dboDemoTab]
- go
- if object_id(N'dbo.MSreplication_objects') is not null
- delete from dbo.MSreplication_objects where object_name = N'sp_MSins_dboDemoTab'
- go
- create procedure [sp_MSins_dboDemoTab]
- @c1 uniqueidentifier,@c2 varbinary(85),@c3 nvarchar(100),@c4 uniqueidentifier,@c5 int
- as
- begin
- if not exists (select * from [dbo].[DemoTab]
- where ( [SID] = @c2 and [Guid] = @c1 )
- )
- begin
- insert into [dbo].[DemoTab](
- [Guid]
- ,[SID]
- ,[Title]
- ,[msrepl_tran_version]
- ,[TEST]
- )
- values (
- @c1
- ,@c2
- ,@c3
- ,@c4
- ,@c5
- )
- end
- end
- go
- if columnproperty(object_id(N'dbo.MSreplication_objects'), N'article', 'AllowsNull') is not null
- exec ('insert dbo.MSreplication_objects (object_name, publisher, publisher_db, publication, article, object_type)
- values (+ N''sp_MSins_dboDemoTab'' , N''SZ1CARD1-DB'' , N''PlatformSync'' , N''publication'' , N''DemoTab'' ,''P'')')
- go
- if object_id(N'[sp_MSupd_dboDemoTab]', 'P') > 0
- drop proc [sp_MSupd_dboDemoTab]
- go
- if object_id(N'dbo.MSreplication_objects') is not null
- delete from dbo.MSreplication_objects where object_name = N'sp_MSupd_dboDemoTab'
- go
- create procedure [sp_MSupd_dboDemoTab]
- @c1 uniqueidentifier,@c2 varbinary(85),@c3 nvarchar(100),@c4 uniqueidentifier,@c5 int,@pkc1 uniqueidentifier,@pkc2 varbinary(85)
- ,@old_msrepl_tran_version uniqueidentifier
- ,@bitmap binary(1)
- as
- begin
- if ( substring(@bitmap,1,1) & 1 = 1 or substring(@bitmap,1,1) & 2 = 2 )
- begin
- update [dbo].[DemoTab] set
- [Guid] = case substring(@bitmap,1,1) & 1 when 1 then @c1 else [Guid] end
- ,[SID] = case substring(@bitmap,1,1) & 2 when 2 then @c2 else [SID] end
- ,[Title] = case substring(@bitmap,1,1) & 4 when 4 then @c3 else [Title] end
- ,[msrepl_tran_version] = case substring(@bitmap,1,1) & 8 when 8 then @c4 else [msrepl_tran_version] end
- ,[TEST] = case substring(@bitmap,1,1) & 16 when 16 then @c5 else [TEST] end
- where [Guid] = @pkc1 and [SID] = @pkc2
- and msrepl_tran_version = @old_msrepl_tran_version
- end
- else
- begin
- update [dbo].[DemoTab] set
- [Title] = case substring(@bitmap,1,1) & 4 when 4 then @c3 else [Title] end
- ,[msrepl_tran_version] = case substring(@bitmap,1,1) & 8 when 8 then @c4 else [msrepl_tran_version] end
- ,[TEST] = case substring(@bitmap,1,1) & 16 when 16 then @c5 else [TEST] end
- where [Guid] = @pkc1 and [SID] = @pkc2
- and msrepl_tran_version = @old_msrepl_tran_version
- end
- end
- go
- if columnproperty(object_id(N'dbo.MSreplication_objects'), N'article', 'AllowsNull') is not null
- exec ('insert dbo.MSreplication_objects (object_name, publisher, publisher_db, publication, article, object_type)
- values (+ N''sp_MSupd_dboDemoTab'' , N''SZ1CARD1-DB'' , N''PlatformSync'' , N''publication'' , N''DemoTab'' ,''P'')')
- go
- if object_id(N'[sp_MSdel_dboDemoTab]', 'P') > 0
- drop proc [sp_MSdel_dboDemoTab]
- go
- if object_id(N'dbo.MSreplication_objects') is not null
- delete from dbo.MSreplication_objects where object_name = N'sp_MSdel_dboDemoTab'
- go
- create procedure [sp_MSdel_dboDemoTab]
- @pkc1 uniqueidentifier,@pkc2 varbinary(85)
- ,@msrepl_tran_version uniqueidentifier
- as
- begin
- delete [dbo].[DemoTab]
- where [Guid] = @pkc1 and [SID] = @pkc2
- and msrepl_tran_version = @msrepl_tran_version
- end
- go
- if columnproperty(object_id(N'dbo.MSreplication_objects'), N'article', 'AllowsNull') is not null
- exec ('insert dbo.MSreplication_objects (object_name, publisher, publisher_db, publication, article, object_type)
- values (+ N''sp_MSdel_dboDemoTab'' , N''SZ1CARD1-DB'' , N''PlatformSync'' , N''publication'' , N''DemoTab'' ,''P'')')
- go
此存储过程生成应用于订阅的跟踪项目信息和同步触发器。 生成的脚本在订阅服务器的订阅数据库上执行。 此存储过程在发布服务器的发布数据库中执行。
- EXEC sp_script_synctran_commands @publication = 'publication', @article = 'DemoTab'
- if @@microsoftversion<0x07320000
- raiserror('当发布服务器为 SQL Server 2000 或更高版本时,必须将订阅服务器升级到 SQL Server 2000 才能创建可更新订阅。',16, -1)
- if (@@microsoftversion >= 0x09000000)
- begin
- exec sp_addqueued_artinfo 1044
- , N'DemoTab'
- , N'publisher'
- , N'publicationDB'
- , N'publication'
- , N'DemoTab'
- , N'dbo'
- , N'conflict_publication_DemoTab'
- end
- if (@@microsoftversion < 0x09000000)
- begin
- exec sp_addqueued_artinfo 1044
- , N'DemoTab'
- , N'publisher'
- , N'publicationDB'
- , N'publication'
- , N'DemoTab'
- , N'dbo'
- , N'conflict_publication_DemoTab'
- , 0x000000000000000000000000000000000000000000000000000000000000008f
- end
- if (@@microsoftversion >= 0x09000000)
- begin
- delete from MSsubscription_articlecolumns
- where artid = 1044
- and agent_id = (
- select id from MSsubscription_agents
- where update_mode > 0
- and UPPER(publisher) = UPPER(N'publisher')
- and publisher_db = N'publicationDB'
- and publication = N'publication'
- )
- end
- if (@@microsoftversion >= 0x09000000)
- begin
- declare @agent_id_1044 int
- select @agent_id_1044 = id
- from MSsubscription_agents
- where update_mode > 0
- and UPPER(publisher) = UPPER(N'publisher')
- and publisher_db = N'publicationDB'
- and publication = N'publication'
- if @agent_id_1044 is not null
- begin
- insert MSsubscription_articlecolumns (agent_id, artid, colid)
- values (@agent_id_1044, 1044, 1)
- insert MSsubscription_articlecolumns (agent_id, artid, colid)
- values (@agent_id_1044, 1044, 2)
- insert MSsubscription_articlecolumns (agent_id, artid, colid)
- values (@agent_id_1044, 1044, 3)
- insert MSsubscription_articlecolumns (agent_id, artid, colid)
- values (@agent_id_1044, 1044, 4)
- insert MSsubscription_articlecolumns (agent_id, artid, colid)
- values (@agent_id_1044, 1044, 8)
- end
- end
- if (@@microsoftversion >= 0x080002C0)
- begin
- exec sp_addsynctriggers
- N'DemoTab'
- , N'dbo'
- , N'publisher'
- , N'publicationDB'
- , N'publication'
- , N'sp_MSsync_ins_DemoTab_4'
- , N'sp_MSsync_upd_DemoTab_4'
- , N'sp_MSsync_del_DemoTab_4'
- , N'sp_MScft_publication_DemoTab'
- , N'dbo'
- , N'null'
- , N'null'
- , N'null'
- , 0x03
- , 0
- ,1
- ,N'publisher'
- , 2
- end
- if (@@microsoftversion < 0x080002C0)
- begin
- exec sp_addsynctriggers
- N'DemoTab'
- , N'dbo'
- , N'publisher'
- , N'publicationDB'
- , N'publication'
- , N'sp_MSsync_ins_DemoTab_4'
- , N'sp_MSsync_upd_DemoTab_4'
- , N'sp_MSsync_del_DemoTab_4'
- , N'sp_MScft_publication_DemoTab'
- , N'dbo'
- , N'null'
- , N'null'
- , N'null'
- , 0x03
- , 0
- ,1
- ,N'publisher'
- end
订阅相关对象已经更改完成!接下来还得改发布中的一些对象!~
查看发布数据库中涉及的对象:
- SELECT * FROM sysarticleupdates WHERE artid=(select artid from sysarticles where name='DemoTab')
对应d 对象,这些对象都需要更改!~
- select
- case
- when object_id=427877337 then 'sync_ins_proc'
- when object_id=443877394 then 'sync_upd_proc'
- when object_id=459877451 then 'sync_del_proc'
- when object_id=475877508 then 'sync_upd_tri'
- when object_id=491877565 then 'conflict_tableid'
- when object_id=539877736 then 'ins_conflict_proc'
- else '' end as sysarticleupdates
- ,object_id,name
- from sys.objects
- where object_id in(427877337,443877394,459877451,475877508,491877565,539877736)
6 个对象,将逐个更改!(sp_MSsync_upd_trig_DemoTab_4 不需要更改)
1. 更改冲突表 conflict_publication_DemoTab
重新创建冲突表.在发布数据库执行,生成的脚本在发布数据库执行.
- EXEC sp_scriptsubconflicttable @publication = 'publication', @article = 'DemoTab'
- if object_id(N'[dbo].[conflict_publication_DemoTab]') is not null
- begin DROP TABLE [dbo].[conflict_publication_DemoTab] end
- CREATE TABLE [dbo].[conflict_publication_DemoTab](
- [Guid] uniqueidentifier NOT NULL
- ,[SID] varbinary(85) NOT NULL
- ,[Title] nvarchar(100) NOT NULL
- ,[msrepl_tran_version] uniqueidentifier NOT NULL
- ,[TEST] int NULL
- ,origin_datasource nvarchar(255) NULL
- ,conflict_type int NULL
- ,reason_code int NULL
- ,reason_text nvarchar(720) NULL
- ,pubid int NULL
- ,tranid nvarchar(40) NULL
- ,insertdate datetime NOT NULL
- ,qcfttabrowid uniqueidentifier DEFAULT NEWID() NOT NULL
- )
- CREATE UNIQUE INDEX [cftind_publication_DemoTab]
- ON [dbo].[conflict_publication_DemoTab]([SID], [Guid], tranid, qcfttabrowid)
重建表之后,object_id 不一样,sysarticleupdates 的冲突表id需要更改。
- update sysarticleupdates
- set conflict_tableid = (select object_id from sys.objects where object_id=object_id('conflict_publication_DemoTab'))
- where artid=(select artid from sysarticles where name='DemoTab')
2.修改更新冲突表的存储过程
- exec sp_helptext sp_MScft_publication_DemoTab
3. 更改发布中的存储过程
发布库这 3 个存储过程:sp_MSsync_del_DemoTab_4,sp_MSsync_ins_DemoTab_4,sp_MSsync_upd_DemoTab_4
这3 个存储过程分别被订阅数据库表的触发器调用,因此注意传参的位置.新字段[test]参数在[msrepl_tran_version]之后
trg_MSsync_del_DemoTab 调用存储过程 sp_MSsync_del_DemoTab_4
trg_MSsync_ins_DemoTab 调用存储过程 sp_MSsync_ins_DemoTab_4
trg_MSsync_upd_DemoTab 调用存储过程 sp_MSsync_upd_DemoTab_4
这3个存储改动的地方较多,但是都是更改相应的列。里面要加入参数,或者字段赋值等,字段test参考其他字段就行,参数只是改变个编号。
[sp_MSsync_del_DemoTab_4] 增加传递的参数 @c5_old INT ,修改一处位置如下。
[sp_MSsync_ins_DemoTab_4] 增加传递的参数 @c5 INT
更改2处相同代码:
- insert into [dbo].[DemoTab]( [Guid] , [SID] , [Title] , [msrepl_tran_version] ,TEST )
- values ( @c1 , @c2 , @c3 , @c4 ,@c5 )
sp_MSsync_upd_DemoTab_4 增加2个参数 @c6 int ,,@c6_old int ,更改几处脚本
参数位置参考订阅触发器 trg_MSsync_upd_DemoTab 中传递的位置 :@c1,@c2,@c3,@c4,@c6 ,@c1_old,@c2_old,@c3_old,@c4_old,@c6_old
注: 上面的参数应该都以触发器中的名称编号一样,不是@c5, 而是 @c6 ,避免以后再添加列时导致错乱!~上面的应该改!(刚忘记 了,就不回去改了)
注意这里,前8列获取第一个字节 substring(@bitmap,1,1) ,每列对应一个位,第5列为 00010000, 为16.注意改这里。
(更多参考 深入理解SQL Server 2005 中的 COLUMNS_UPDATED函数 )
发布对象更改完成!~
现在进行测试,分别在发布库和订阅库执行一遍,数据正常同步!~
- INSERT INTO [DemoTab](Guid,SID,Title) select NEWID(),SUSER_SID(),'test'
- UPDATE [DemoTab] SET Title = 'KK'
- DELETE FROM [DemoTab]
- INSERT INTO [DemoTab](Guid,SID,Title,test) select NEWID(),SUSER_SID(),'test',0
- UPDATE [DemoTab] SET test = 10
- DELETE FROM [DemoTab]
- ALTER TABLE dbo.[DemoTab] DROP COLUMN TEST
最终删除该列 【test】,订阅库中也自动同步被删除!~同步正常!~试验结束!~
总结:
手动更改比较麻烦!~尤其是在发布库,没有找到相关自动生成的存储过程(觉得应该是有的),所以发布的对象一个个更改!~刚开始的时候,本人连订阅的对象都是一个个更改!~后来测试几次总结出这个顺序。
- --发布库执行,将新增的字段添加到发布.
- select name,column_id from sys.columns where object_id=object_id('DemoTab')
- select artid from sysarticles where name='DemoTab'
- select * from sysarticlecolumns where artid=1044
- --发布库执行,生成的脚本在订阅执行.
- EXEC sp_scriptpublicationcustomprocs N'publication'
- EXEC sp_scriptsubconflicttable @publication = 'publication', @article = 'DemoTab'
- EXEC sp_script_synctran_commands @publication = 'publication', @article = 'DemoTab'
- --发布库执行,修改发布相关对象
- SELECT * FROM sysarticleupdates WHERE artid=
为什么要这样做?有时候有的表没有同步、有时某些对象被删除、或者原本不行同步,现在又同步了(如开始说明)。
这里还没完全测试,比如在发布和订阅的字段都有数据时,会不会也是同样处理?
========================
复制分发:架构变更,如何处理,自动同步。问题
always on自动同步,与mysql是一致的。
https://blog.csdn.net/kk185800961/article/details/47614779