sys.federation_history (Azure SQL Database)
Applies To: SQL Server 2014, SQL Server 2016 Preview
Contains historical information about a federation.
The current implementation of Federations will be retired with Web and Business service tiers. Consider deploying custom sharding solutions to maximize scalability, flexibility, and performance. For more information about custom sharding, see Scaling Out Azure SQL Databases.
Applies to: Azure SQL Database.
The federation id
Name of the federation
Datetime the federation was dropped
Datetime the federation was created
This view requires VIEW DATABASE STATE permission.
Cleanup of historical data is performed automatically every two weeks. Cleanup is triggered by operations that update the log information. This can result in historical information being retained for longer than two weeks if no new operations have been performed.
The drop_date and create_date columns are populated on the completion of an operation. For asynchronous operations these fields are populated when the operation completes fully, not when the command returns.