You have an update statistics query that uses hash aggregate operators in the query execution plan in an instance of Microsoft SQL Server. When the query runs, you receive a "corrupted index" message (Error 9100), and you lose your client connection to the server.
This problem is fixed in the following updates for SQL Server:
Cumulative Update 12 for SQL Server 2014 Service Pack 2
Each new cumulative update for SQL Server contains all the hotfixes and security fixes that were in the previous build. We recommend that you install the latest build for your version of SQL Server:
Service Pack information for SQL Server:
This issue is fixed in the following service pack for SQL Server:
Service packs are cumulative. Each new service pack contains all the fixes that are in previous service packs, together with any new fixes. Our recommendation is to apply the latest service pack and the latest cumulative update for that service pack. You do not have to install a previous service pack before you install the latest service pack. Use Table 1 in the following article for finding more information about the latest service pack and latest cumulative update.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology Microsoft uses to describe software updates.