FIX: Query operation freezes when you insert data into a clustered columnstore index in parallel in SQL Server data warehousing

Gjelder: SQL Server 2017 DeveloperSQL Server 2017 EnterpriseSQL Server 2017 Enterprise Core


Assume that you use Microsoft SQL Server data warehousing. When you run parallel insert queries to insert data into a clustered columnstore index, the query operation freezes.


This problem is fixed in the following updates for SQL Server:

Cumulative Update 12 for SQL Server 2017

Cumulative update 4 for SQL Server 2016 SP2


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


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