DROP MASTER KEY (Transact-SQL)
Applies To: SQL Server 2014, SQL Server 2016 Preview
Removes the master key from the current database.
Applies to: SQL Server (SQL Server 2008 through current version), Azure SQL Data Warehouse Public Preview.
This statement takes no arguments.
The drop will fail if any private key in the database is protected by the master key.
Requires CONTROL permission on the database.
The following example removes the master key for the AdventureWorks2012 database.
USE AdventureWorks2012; DROP MASTER KEY; GO