     @postAggregations = []
     @nameIndex = 0
     @intervals = null
+    @useCache = true
 
   dateToIntervalPart: (date) ->
     return date.toISOString()

      granularity: @granularity
      intervals
    }
    query.filter = @filter if @filter

    if @dimension

          bucketSize: split.size
          offset: split.offset
        }
        @useCache = false

      when 'tuple'
        throw new Error("only supported tuples of size 2 (is: #{split.splits.length})") unless split.splits.length is 2
