FIX: "Corrupted index" message and server disconnection when an update statistics query uses hash aggregate on SQL Server

Applies to: SQL Server 2014 DeveloperSQL Server 2014 EnterpriseSQL Server 2014 Enterprise Core


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 9 for SQL Server 2017

       Cumulative Update 2 for SQL Server 2016 SP2

       Cumulative Update 10 for SQL Server 2016 SP1

       Cumulative Update 12 for SQL Server 2014 Service Pack 2

Service Pack information for SQL Server:

This issue is fixed in the following service pack for SQL Server:

       Service Pack 3 for SQL Server 2014



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.