sp_adddynamicsnapshot_job (Transact-SQL)

Creates an agent job that generates a filtered data snapshot for a publication with parameterized row filters. This stored procedure is executed at the Publisher on the publication database. This stored procedure is used by an administrator to manually create filtered data snapshot jobs for Subscribers.

Note

In order for a filtered data snapshot job to be created, a standard snapshot job for the publication must already exist.

For more information, see Snapshots for Merge Publications with Parameterized Filters.

Transact-SQL Syntax Conventions

Syntax

sp_adddynamicsnapshot_job [ @publication = ] 'publication' 
    [ , [ @suser_sname = ] 'suser_sname' ] 
    [ , [ @host_name = ] 'host_name' ] 
    [ , [ @dynamic_snapshot_jobname = ] 'dynamic_snapshot_jobname' OUTPUT ] 
    [ , [ @dynamic_snapshot_jobid = ] 'dynamic_snapshot_jobid' OUTPUT ] 
    [ , [ @frequency_type= ] frequency_type ]
    [ , [ @frequency_interval= ] frequency_interval ]
    [ , [ @frequency_subday= ] frequency_subday ]
    [ , [ @frequency_subday_interval= ] frequency_subday_interval ]
    [ , [ @frequency_relative_interval= ] frequency_relative_interval ]
    [ , [ @frequency_recurrence_factor= ] frequency_recurrence_factor ]
    [ , [ @active_start_date= ] active_start_date ]
    [ , [ @active_end_date= ] active_end_date ]
    [ , [ @active_start_time_of_day= ] active_start_time_of_day ]
    [ , [ @active_end_time_of_day= ] active_end_time_of_day ]

Arguments

• [ @publication=] 'publication'
  Is the name of the publication to which the filtered data snapshot job is being added. publication is sysname, with no default.

• [ @suser_sname= ] 'suser_sname'
  Is the value used when creating a filtered data snapshot for a subscription that is filtered by the value of the SUSER_SNAME function at the Subscriber. suser_sname is sysname, with no default. suser_sname should be NULL if this function is not used to dynamically filter the publication.

• [ @host_name= ] 'host_name'
  Is the value used when creating a filtered data snapshot for a subscription that is filtered by the value of the HOST_NAME function at the Subscriber. host_name is sysname, with no default. host_name should be NULL if this function is not used to dynamically filter the publication.

• [ @dynamic_snapshot_jobname= ] 'dynamic_snapshot_jobname'
  Is the name of the filtered data snapshot job created. dynamic_snapshot_jobname is sysname, with default of NULL, and is an optional OUTPUT parameter. If specified, dynamic_snapshot_jobname must resolve to a unique job at the Distributor. If unspecified, a job name will be automatically generated and returned in the result set, where the name is created as follows:

  'dyn_' + <name of the standard snapshot job> + <GUID>
  

  Note

  When generating the name of the dynamic snapshot job, you may truncate the name of the standard snapshot job.

• [ @dynamic_snapshot_jobid= ] 'dynamic_snapshot_jobid'
  Is an identifier for the filtered data snapshot job created. dynamic_snapshot_jobid is uniqueidentifier, with default of NULL, and is an optional OUTPUT parameter.

• [ @frequency_type=] frequency_type
  Is the frequency with which to schedule the filtered data snapshot job. frequency_type is int, and can be one of these values.

  Value	Description
  1	One time
  2	On demand
  4 (default)	Daily
  8	Weekly
  16	Monthly
  32	Monthly relative
  64	Autostart
  128	Recurring

• [ @frequency_interval = ] frequency_interval
  Is the period (measured in days) when the filtered data snapshot job is executed. frequency_interval is int, with a default value of 1, and depends on the value of frequency_type.

  Value of frequency_type	Effect on frequency_interval
  1	frequency_interval is unused.
  4 (default)	Every frequency_interval days, with a default of daily.
  8	frequency_interval is one or more of the following (combined with a | (Bitwise OR) (Transact-SQL) logical operator): 1 = Sunday | 2 = Monday | 4 = Tuesday | 8 = Wednesday | 16 = Thursday | 32 = Friday | 64 = Saturday
  16	On the frequency_interval day of the month.
  32	frequency_interval is one of the following: 1 = Sunday | 2 = Monday | 3 = Tuesday | 4 = Wednesday | 5 = Thursday | 6 = Friday | 7 = Saturday | 8 = Day | 9 = Weekday | 10 = Weekend day
  64	frequency_interval is unused.
  128	frequency_interval is unused.

• [ @frequency_subday=] frequency_subday
  Specifies the units for frequency_subday_interval. frequency_subday is int, and can be one of these values.

  Value	Description
  1	Once
  2	Second
  4 (default)	Minute
  8	Hour

• [ @frequency_subday_interval=] frequency_subday_interval
  Is the number of frequency_subday periods that occur between each execution of the job. frequency_subday_interval is int, with a default of 5.

• [ @frequency_relative_interval=] frequency_relative_interval
  Is the occurrence of the filtered data snapshot job in each month. This parameter is used when frequency_type is set to 32 (monthly relative). frequency_relative_interval is int, and can be one of these values.

  Value	Description
  1 (default)	First
  2	Second
  4	Third
  8	Fourth
  16	Last

• [ @frequency_recurrence_factor=] frequency_recurrence_factor
  Is the recurrence factor used by frequency_type. frequency_recurrence_factor is int, with a default of 0.

• [ @active_start_date=] active_start_date
  Is the date when the filtered data snapshot job is first scheduled, formatted as YYYYMMDD. active_start_date is int, with a default of NULL.

• [ @active_end_date=] active_end_date
  Is the date when the filtered data snapshot job stops being scheduled, formatted as YYYYMMDD. active_end_date is int, with a default of NULL.

• [ @active_start_time_of_day=] active_start_time_of_day
  Is the time of day when the filtered data snapshot job is first scheduled, formatted as HHMMSS. active_start_time_of_day is int, with a default of NULL.

• [ @active_end_time_of_day=] active_end_time_of_day
  Is the time of day when the filtered data snapshot job stops being scheduled, formatted as HHMMSS. active_end_time_of_day is int, with a default of NULL.

Result Set

Column name	Data type	Description
id	int	Identifies the filtered data snapshot job in the MSdynamicsnapshotjobs system table.
dynamic_snapshot_jobname	sysname	Name of the filtered data snapshot job.
dynamic_snapshot_jobid	uniqueidentifier	Uniquely identifies the Microsoft SQL Server Agent job at the Distributor.

Return Code Values

0 (success) or 1 (failure)

Remarks

sp_adddynamicsnapshot_job is used in merge replication for publications that use a parameterized filter.

Example

-- 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'AdventureWorks';
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 [AdventureWorks];

-- Enable AdventureWorks 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 AdventureWorks.', 
  @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].[EmployeeID] = [SalesPerson].[SalesPersonID]', 
  @join_unique_key = 1, 
  @filter_type = 1;
GO

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

EXEC sp_startpublication_snapshot 
  @publication = @publication;
GO

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

-- 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)
BEGIN
    WAITFOR DELAY '00:00:05'
END

-- 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, 
    active_start_time,active_end_time)
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;
DROP TABLE #temp;
GO

Permissions

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

See Also

Tasks

How to: Create a Snapshot for a Merge Publication with Parameterized Filters (Replication Transact-SQL Programming)

Reference

sp_dropdynamicsnapshot_job (Transact-SQL)

sp_helpdynamicsnapshot_job (Transact-SQL)

Concepts

Parameterized Row Filters