Assume that you have a partitioned table that contains a computed partitioning column which is marked as PERSISTED in Microsoft SQL Server 2014 or 2016, and then you rebuild the partition online. In this situation, you receive the following error message:
Msg 4819, Level 16, State 1, Line LineNumber
Cannot bulk load. The bulk data stream was incorrectly specified as sorted or the data violates a uniqueness constraint imposed by the target table. Sort order incorrect for the following two rows: primary key of first row: (RowNumber, DateTime), primary key of second row: (RowNumber, DateTime).
The statement has been terminated.
To activate this hotfix, you have to enable the trace flag (TF) 176. This issue is fixed in the following cumulative updates for SQL Server:
Cumulative Update 7 for SQL Server 2016 SP1
Cumulative Update 4 for SQL Server 2016
To work around this issue, use SORT_IN_TEMPDB=ON in the rebuilding query.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminologythat Microsoft uses to describe software updates.