SQL Server : how to group values by month interval with offset -

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i have query groups aggregated sum values month.

this query:

declare @isbystatus bit set @isbystatus = 0  select     cast((datediff(month, '2012-01-01t06:00:00', dattimestamp)) int) [index] ,     min(dattimestamp) [from],     max(dattimestamp) [to],     sum(case cast(intio_id nvarchar(100))              when n'284' value else null end) [286]      [iovaluesfn](@isbystatus) iovalues       dattimestamp >= '2012-01-01t06:00:00'      , dattimestamp < '2013-01-01t05:59:59'     , intio_id in (284) group      cast ((datediff(month,'2012-01-01t06:00:00', dattimestamp)) int) order     [from]

and result:

index       286 0   2012-01-07 07:00:00.000 2012-01-31 23:00:00.000 142579.898864746 1   2012-02-01 00:00:00.000 2012-02-29 23:00:00.000 139486.498001099 2   2012-03-01 00:00:00.000 2012-03-31 23:00:00.000 99516.3022232056 3   2012-04-01 00:00:00.000 2012-04-30 23:00:00.000 84597.599899292 4   2012-05-01 00:00:00.000 2012-05-31 23:00:00.000 67085.2983112335 5   2012-06-01 00:00:00.000 2012-06-30 23:00:00.000 67768.9982643127 6   2012-07-01 00:00:00.000 2012-07-31 23:00:00.000 121100.264842987 7   2012-08-01 00:00:00.000 2012-08-31 23:00:00.000 165768.90776825 8   2012-09-01 00:00:00.000 2012-09-30 23:00:00.000 97441.7333068848 9   2012-10-01 00:00:00.000 2012-10-31 23:00:00.000 153764.736312866 10  2012-11-01 00:00:00.000 2012-11-30 23:00:00.000 153601.413961411 11  2012-12-01 00:00:00.000 2012-12-31 23:00:00.000 142521.07028389 12  2013-01-01 00:00:00.000 2013-01-01 05:00:00.000 1192.32000732422

now want similar logic, insert offset in month start-end time.

e.g. first period start on january 1'st on 11:00 , end @ february 1 10:59:59 am.

same goes each subsequent month.

thanks in advance help, omer

have @ example below. trick add negative amount of offset such hour prior 11am on first day of month "pushed" prior month.

schema setup:

create function iovaluesfn(@isbystatus bit) returns table return select dattimestamp = '20130101 10:50', intio_id = 284, value = 1 union select '20130101 11:00', 284, 1 union select '20130102 11:00', 284, 2 union select '20130301 11:00', 284, 3 union select '20130401 11:00', 284, 4 union select '20120501 11:00', 284, 5 union select '20120601 11:00', 284, 6 union select '20120101 11:00', 284, 7 union select '20120102 11:00', 284, 8 union select '20120101 11:01', 284, 9 union select '20120101 10:59', 284,10 union  -- ** value counted in dec 2011 select '20120101 11:00', 284,11 union select '20120101 11:01', 281,12 union select '20120101 10:59', 281,13 union select '20120101 11:00', 281,14 go

query:

declare @isbystatus bit; set @isbystatus = 0;  ;with iovalues (   select dateadd(hour, -11, dattimestamp) dattimestamp, intio_id, value     [iovaluesfn](@isbystatus)    dattimestamp >= '2012-01-01t06:00:00' , dattimestamp < '2013-01-01t05:59:59'      , intio_id in (284) )   select cast((datediff(month,'2012-01-01t06:00:00',dattimestamp)) int) [index],          min(dattimestamp) [from],          max(dattimestamp) [to],          sum(case cast(intio_id nvarchar(100))              when n'284' value else null end) [286]     iovalues group cast ((datediff(month,'2012-01-01t06:00:00',dattimestamp))as int) order [from];

results:

| index |              |                | 286    | ---------------------------------------------------------- |    -1 | december, 31 2011 | december, 31 2011 |  10*** | |     0 |  january, 01 2012 |  january, 02 2012 |  35    | |     4 |      may, 01 2012 |      may, 01 2012 |   5    | |     5 |     june, 01 2012 |     june, 01 2012 |   6    |

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