I am looking for the best way to retrieve and store monthly data from a  "non-local data stores" that are access via SQL.  

Here is the SQL script that I am using.

SELECT h.DateTime, h.Tagname, h.value, q.QualityString as Quality    -- Columns to get
FROM History h                                                     -- Tables to get from
      INNER JOIN QualityMap q on h.QualityDetail = q.QualityDetail
WHERE Tagname like '%.TotalEnergy'                                  -- Get only tags ending in .TotalEnergy
AND DateTime >= Dateadd(Month, -2, getdate())                                     -- start date
and wwRetrievalMode = 'Counter'                                     -- Calculate the DELTA (Last Reading - Current Reading)
and wwResolution = 3600000 * 24                                    -- Make calculations over a day period over start/end time

I am wanting to change the start date, so that it is pulling the current Calendar year.  I want it to start pulling the new years data once the new year hits.

I am going to set this up for incremental refresh, so I do not have to pull the prior months data each time.