Monitor number of records returned in a long-running SELECT statement during SSAS processing On a SQL Server 2014, I have an SSAS tabular model which is querying a relational clustered columnstore table (with 800 mio. records), when the model is being processed. The query is just a simple SELECT statement with no joins, filters, etc. I am processing the model through an XMLA command, which is being fired by a SQL Server Agent job. The processing takes a couple of hours.

To get an idea of the progress of the processing, I would like to know the number of records returned so far by the SELECT statement. Is there any way to do this, when I know the SPID of the SELECT statement?

sys.dm_exec_requests does not seem to contain any record count information.

Also, I have tried to look in the DMV's of Analysis Services, to see if any of these objects could give me the information I need, but no luck.

The reason I think it must be possible to obtain this information somehow, is that when I process the tabular model through the graphical IDE of SSMS, it actually shows the row count while processing.

Update: It turns out the sys.dm_exec_requests DMV actually has a row_count column. Unfortunately, the contents of this column does not seem to reflect reality. For the first hour or so of processing, it had the value of "3", but I know from experience that several million records would have been returned within the first hour.
If you connect SQL Server Profiler to SSAS and watch the Progress Report Current events with an EventSubclass=ReadData the IntegerData column will show the cumulative rows read so far for that SSAS partition.  


  Integerdata:   Contains the integer data associated with the reported
  event, such as the current count of the number of rows processed for a
  processing event.