When you run a query that performs join operations by using MERGE JOIN in Microsoft SQL Server 2014, you may receive an assertion error that resembles the following:
Comment: 'Stack Trace'
Comment: 'Location: "qsmerge.cpp":LineNumber
Expression: m_hrOuter == DB_S_FAKEROW && m_hrInner == DB_S_FAKEROW
Process ID: ProcessID
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.