Summary

When a query plan uses a batch-mode hash join where one of the inputs is an optimized bitmap filter with an underlying bookmark lookup or key lookup in Microsoft SQL Server 2016 and SQL Server 2017, inaccurate estimations are produced. This update improves the query performance for the scenario.

Resolution

This improvement is included in the following cumulative update for SQL Server:

       Cumulative Update 6 for SQL Server 2017

       Cumulative update 8 for SQL Server 2016 SP1  

Note:

Each new cumulative update for SQL Server contains all the hotfixes and security fixes that were in the previous build. Check out the latest cumulative update for SQL Server:

Latest cumulative update for SQL Server 2017

Latest cumulative update for SQL Server 2016

Status

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

References

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

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