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sp_addmergepartition (Transact-SQL)

Applies To: SQL Server 2014, SQL Server 2016 Preview

Topic Status: Some information in this topic is preview and subject to change in future releases. Preview information describes new features or changes to existing features in Microsoft SQL Server 2016 Community Technology Preview 2 (CTP2).

Creates a dynamically filtered partition for a subscription that is filtered by the values of HOST_NAME or SUSER_SNAME at the Subscriber. This stored procedure is executed at the Publisher on the database that is being published, and is used to manually generate partitions.

Topic link icon Transact-SQL Syntax Conventions

sp_addmergepartition [ @publication = ] 'publication' 
        , [ @suser_sname = ] 'suser_sname' 
        , [ @host_name = ] 'host_name'

[ @publication= ] 'publication'

Is the merge publication on which the partition is being created. publication is sysname, with no default. If suser_sname is specified, the value of hostname must be NULL.

[ @suser_sname= ] 'suser_sname'

Is the value used when creating the partition for a subscription that is filtered by the value of the SUSER_SNAME function at the Subscriber. suser_sname is sysname, with no default.

[ @host_name= ] 'host_name'

Is the value used when creating the partition for a subscription that is filtered by the value of the HOST_NAME function at the Subscriber. host_name is sysname, with no default.

0 (success) or 1 (failure)

sp_addmergepartition is used in merge replication.

-- 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'AdventureWorks2012';
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 [AdventureWorks2012];

-- Enable AdventureWorks2012 for merge replication.
EXEC sp_replicationdboption
  @dbname = @publicationdb,
  @optname = N'merge publish',
  @value = N'true';  

-- Create new merge publication.  
EXEC sp_addmergepublication 
  @publication = @publication, 
  @description = N'Merge publication of AdventureWorks2012.', 
  @allow_subscriber_initiated_snapshot = N'false';

-- 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 customer 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;

-- Start the snapshot agent job.
DECLARE @publication AS sysname;
SET @publication = N'AdvWorksSalesPersonMerge';

EXEC sp_startpublication_snapshot 
  @publication = @publication;

PRINT '*** Waiting for the initial snapshot.';

-- Create a temporary table to store the filtered data snapshot 
-- job information.
CREATE TABLE #temp (id int,
	job_name sysname,
	job_id uniqueidentifier,
	dynamic_filter_login sysname NULL,
	dynamic_filter_hostname sysname NULL,
	dynamic_snapshot_location nvarchar(255),
	frequency_type int, 
	frequency_interval int, 
	frequency_subday_type int,
	frequency_subday_interval int, 
	frequency_relative_interval int, 
	frequency_recurrence_factor int, 
	active_start_date int, 
	active_end_date int, 
	active_start_time int, 
	active_end_time int

-- Create each snapshot for a partition 
-- The initial snapshot must already be generated.
DECLARE @publication AS sysname;
DECLARE @jobname AS sysname
DECLARE @hostname AS sysname
SET @publication = N'AdvWorksSalesPersonMerge';
SET @hostname = N'adventure-works\Fernando';

WHILE NOT EXISTS(SELECT * FROM sysmergepublications 
    WHERE [name] = @publication 
    AND snapshot_ready = 1)
    WAITFOR DELAY '00:00:05'

-- Create a data partition by overriding HOST_NAME().
EXEC sp_addmergepartition 
  @publication = @publication,
  @host_name = @hostname;

-- Create the filtered data snapshot job, and use the returned 
-- information to start the job.
EXEC sp_adddynamicsnapshot_job 
  @publication = @publication,
  @host_name = @hostname;

INSERT INTO #temp (id, job_name, job_id, dynamic_filter_login,
	dynamic_filter_hostname, dynamic_snapshot_location,
	frequency_type,	frequency_interval, frequency_subday_type,
	frequency_subday_interval, frequency_relative_interval, 
	frequency_recurrence_factor, active_start_date,	active_end_date, 
EXEC sp_helpdynamicsnapshot_job;

SELECT @jobname = (SELECT DISTINCT job_name FROM #temp WHERE dynamic_filter_hostname = @hostname);

EXEC msdb..sp_start_job @job_name = @jobname;

Only members of the sysadmin fixed server role or db_owner fixed database role can execute sp_addmergepartition.

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