Count dirty aggregations in last X days

 /*Count dirty aggregations in last X days*/
 DECLARE @Days AS int
 SET @Days = 1 --number of days to go back
 SELECT Count(*) AS [Failed],
     DS.DatasetDefaultName AS [Dataset],
     CASE SDAH.AggregationTypeId
         WHEN 0 THEN 'Raw' WHEN 20 THEN 'Hourly' WHEN 30 THEN 'Daily' ELSE 'Unknown'
     END AS [Type]
 FROM Dataset AS DS INNER JOIN
     StandardDatasetAggregationHistory AS SDAH ON SDAH.DatasetId = DS.DatasetId
 WHERE SDAH.DirtyInd <> 0 AND SDAH.AggregationDateTime > DATEADD(DD, -@Days, getdate())
 GROUP BY DS.DatasetDefaultName, SDAH.AggregationTypeId
 ORDER BY [Failed] DESC, [Dataset] ASC, [Type] ASC