项目
04/01/2012

如何定义和修改合并项目之间的联接筛选器（复制 Transact-SQL 编程）

合并复制支持联接筛选器，这类筛选器通常与参数化筛选器配合使用，以将表分区扩展到其他相关的表项目。本主题显示了父项目上的参数化筛选器以及该项目和相关子项目间的联接筛选器。可以使用复制存储过程，以编程方式定义和修改联接筛选器。

定义联接筛选器以将项目筛选器扩展到合并发布中的相关项目

为要联接到的项目（又称为父项目）定义筛选。
- 对于使用参数化行筛选器筛选的项目，请参阅如何为合并项目定义和修改参数化行筛选器（复制 Transact-SQL 编程）。
- 对于使用静态行筛选器筛选的项目，请参阅如何定义和修改静态行筛选器（复制 Transact-SQL 编程）。
在发布服务器上，对发布数据库执行 sp_addmergearticle (Transact-SQL) 从而为发布定义一个或多个相关项目（又称为子项目）。有关详细信息，请参阅如何定义项目（复制 Transact-SQL 编程）。

在发布服务器上，对发布数据库执行 sp_addmergefilter (Transact-SQL)。指定 @publication，为 @filtername 指定此筛选器的唯一名称，为 @article 指定在步骤 2 中创建的子项目的名称，为 @join_articlename 指定要联接到的父项目的名称，并为 @join_unique_key 指定以下值之一：

0 - 表示父项目与子项目间的多对一或多对多联接。
1 - 表示父项目与子项目间的一对一或一对多联接。

此步骤定义了两个项目间的联接筛选器。

注意
仅当对父项目的基础表中的联接列具有可保证唯一性的约束时，才将 @join_unique_key 设置为 1。如果错误地将 @join_unique_key 设置为 1，则可能无法收敛数据。

示例

本示例定义了合并发布的项目，并针对 SalesOrderHeader 表来筛选 SalesOrderDetail 表项目，而该表本身使用静态行筛选器进行筛选。有关详细信息，请参阅如何定义和修改静态行筛选器（复制 Transact-SQL 编程）。

DECLARE @publication AS sysname;
DECLARE @table1 AS sysname;
DECLARE @table2 AS sysname;
DECLARE @table3 AS sysname;
DECLARE @salesschema AS sysname;
DECLARE @hrschema AS sysname;
DECLARE @filterclause AS nvarchar(1000);
SET @publication = N'AdvWorksSalesOrdersMerge'; 
SET @table1 = N'Employee'; 
SET @table2 = N'SalesOrderHeader'; 
SET @table3 = N'SalesOrderDetail'; 
SET @salesschema = N'Sales';
SET @hrschema = N'HumanResources';
SET @filterclause = N'Employee.LoginID = HOST_NAME()';

-- Add a filtered article for the Employee table.
EXEC sp_addmergearticle 
  @publication = @publication, 
  @article = @table1, 
  @source_object = @table1, 
  @type = N'table', 
  @source_owner = @hrschema,
  @schema_option = 0x0004CF1,
  @description = N'article for the Employee table',
  @subset_filterclause = @filterclause;

-- Add an article for the SalesOrderHeader table that is filtered
-- based on Employee and horizontally filtered.
EXEC sp_addmergearticle 
  @publication = @publication, 
  @article = @table2, 
  @source_object = @table2, 
  @type = N'table', 
  @source_owner = @salesschema, 
  @vertical_partition = N'true',
  @schema_option = 0x0034EF1,
  @description = N'article for the SalesOrderDetail table';

-- Add an article for the SalesOrderDetail table that is filtered
-- based on SaledOrderHeader.
EXEC sp_addmergearticle 
  @publication = @publication, 
  @article = @table3, 
  @source_object = @table3, 
  @source_owner = @salesschema,
  @description = 'article for the SalesOrderHeader table', 
  @identityrangemanagementoption = N'auto', 
  @pub_identity_range = 100000, 
  @identity_range = 100, 
  @threshold = 80,
  @schema_option = 0x0004EF1;

-- Add all columns to the SalesOrderHeader article.
EXEC sp_mergearticlecolumn 
  @publication = @publication, 
  @article = @table2, 
  @force_invalidate_snapshot = 1, 
  @force_reinit_subscription = 1;

-- Remove the credit card Approval Code column.
EXEC sp_mergearticlecolumn 
  @publication = @publication, 
  @article = @table2, 
  @column = N'CreditCardApprovalCode', 
  @operation = N'drop', 
  @force_invalidate_snapshot = 1, 
  @force_reinit_subscription = 1;

-- Add a merge join filter between Employee and SalesOrderHeader.
EXEC sp_addmergefilter 
  @publication = @publication, 
  @article = @table2, 
  @filtername = N'SalesOrderHeader_Employee', 
  @join_articlename = @table1, 
  @join_filterclause = N'Employee.BusinessEntityID = SalesOrderHeader.SalesPersonID', 
  @join_unique_key = 1, 
  @filter_type = 1, 
  @force_invalidate_snapshot = 1, 
  @force_reinit_subscription = 1;

-- Add a merge join filter between SalesOrderHeader and SalesOrderDetail.
EXEC sp_addmergefilter 
  @publication = @publication, 
  @article = @table3, 
  @filtername = N'SalesOrderDetail_SalesOrderHeader', 
  @join_articlename = @table2, 
  @join_filterclause = N'SalesOrderHeader.SalesOrderID = SalesOrderDetail.SalesOrderID', 
  @join_unique_key = 1, 
  @filter_type = 1, 
  @force_invalidate_snapshot = 1, 
  @force_reinit_subscription = 1;
GO

本示例定义了合并发布中的一组项目，并针对 Employee 表使用一系列联接筛选器来筛选这些项目，而该表本身则使用参数化行筛选器并按 LoginID 列中的 HOST_NAME 值进行筛选。有关详细信息，请参阅如何为合并项目定义和修改参数化行筛选器（复制 Transact-SQL 编程）。

-- To avoid storing the login and password in the script file, the value 
-- is passed into SQLCMD as a scripting variable. For information about 
-- how to use scripting variables on the command line and in SQL Server
-- Management Studio, see the "Executing Replication Scripts" section in
-- the topic "Programming Replication Using System Stored Procedures".

--Add a new merge publication.
DECLARE @publicationdb AS sysname;
DECLARE @publication AS sysname;
DECLARE @table1 AS sysname;
DECLARE @table2 AS sysname;
DECLARE @filter AS sysname;
DECLARE @schema_hr AS sysname;
DECLARE @schema_sales AS sysname;

SET @publicationdb = N'AdventureWorks2008R2';
SET @publication = N'AdvWorksSalesPersonMerge';
SET @table1 = N'Employee';
SET @table2 = N'SalesPerson';
SET @filter = N'SalesPerson_Employee';
SET @schema_hr = N'HumanResources';
SET @schema_sales = N'Sales';

USE [AdventureWorks2008R2];

-- Enable AdventureWorks2008R2 for merge replication.
EXEC sp_replicationdboption
  @dbname = @publicationdb,
  @optname = N'merge publish',
  @value = N'true';  

-- Create new merge publication with Subscriber requested snapshot
-- and using the default agent schedule. 
EXEC sp_addmergepublication 
  @publication = @publication, 
  @description = N'Merge publication of AdventureWorks2008R2.', 
  @allow_subscriber_initiated_snapshot = N'true',
  @publication_compatibility_level = N'90RTM';

-- Create a new snapshot job for the publication, using the default schedule.
-- Pass credentials at runtime using sqlcmd scripting variables.
EXEC sp_addpublication_snapshot 
  @publication = @publication, 
  @job_login = $(login), 
  @job_password = $(password);

-- Add an article for the Employee table, 
-- which is horizontally partitioned using 
-- a parameterized row filter.
EXEC sp_addmergearticle 
  @publication = @publication, 
  @article = @table1, 
  @source_owner = @schema_hr, 
  @source_object = @table1, 
  @type = N'table', 
  @description = 'contains employee information', 
  @subset_filterclause = N'[LoginID] = HOST_NAME()';

-- Add an article for the SalesPerson table, 
-- which is partitioned based on a join filter.
EXEC sp_addmergearticle 
  @publication = @publication, 
  @article = @table2, 
  @source_owner = @schema_sales, 
  @source_object = @table2, 
  @type = N'table', 
  @description = 'contains salesperson information';

-- Add a join filter between the two articles.
EXEC sp_addmergefilter 
  @publication = @publication, 
  @article = @table1, 
  @filtername = @filter, 
  @join_articlename = @table2, 
  @join_filterclause = N'[Employee].[BusinessEntityID] = [SalesPerson].[SalesPersonID]', 
  @join_unique_key = 1, 
  @filter_type = 1;
GO

-- Start the agent job to generate the full snapshot for the publication.
-- The filtered data snapshot is generated automatically the first time 
-- the subscription is synchronized. 
DECLARE @publication AS sysname;
SET @publication = N'AdvWorksSalesPersonMerge';

EXEC sp_startpublication_snapshot 
  @publication = @publication;
GO

请参阅

任务

如何定义和修改合并项目间的联接筛选器 (SQL Server Management Studio)

概念

更改发布和项目属性

为合并复制筛选已发布数据

复制系统存储过程概念

通过

如何定义和修改合并项目之间的联接筛选器（复制 Transact-SQL 编程）

定义联接筛选器以将项目筛选器扩展到合并发布中的相关项目

示例

请参阅

任务

概念

其他资源