When you run UPDATE STATISTICS on a computed column that contains the ISNULL function in Microsoft SQL Server 2014, an access violation occurs, and a memory dump file is generated.
The issue was first fixed in the following cumulative update of SQL Server.
Cumulative Update 3 for SQL Server 2014 /en-us/help/2984923
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.