When you execute a query that includes an INSERT INTO...SELECT statement that inserts values into a partitioned clustered columnstore index in SQL Server 2014 or 2016, an intra-query deadlock occurs.


This issue is fixed in the following cumulative updates for SQL Server:

Cumulative Update 5 for SQL Server 2016 RTM

Cumulative Update 2 for SQL Server 2016 SP1

Cumulative Update 3 for SQL Server 2014 Service Pack 2
Note After you install this update, you must set trace flag 2469 to enable the fix. To set trace flag 2469, see the Trace Flags (Transact-SQL) topic on the Microsoft Developer Network (MSDN) website.

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:

Latest cumulative update for SQL Server 2016

Latest cumulative update for SQL Server 2014


To work around this issue, use one of the following methods:

  • Store the intermediate results of the SELECT statement in a temporary table, and then insert the results into the clustered columnstore index from the temporary table.

  • Run the query by using DOP=1.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


Learn about the terminology that Microsoft uses to describe software updates.

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