Symptoms

Assume that you have two measure times, T1 and T2, and T2 is greater than T1. If you calculate (T2-T1) in many iterations, the results might be incorrect. For example, the results might be negative values.

Resolution

This problem was first fixed in the following cumulative update for SQL Server:

Cumulative Update 8 for SQL Server 2014 Service Pack 1

Cumulative update 6 for SQL Server 2012 SP3

Cumulative Update 3 for SQL Server 2016 

Each new cumulative update for SQL Server contains all the hotfixes and 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 2014

Latest cumulative update for SQL Server 2012 SP3

Latest cumulative update for SQL Server 2016

Status

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

References

Learn about the terminology Microsoft uses to describe software updates.

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