Cumulative result of items for drawing - sql

Question

I have a table ENG_Drawing.Its fields are
SELECT DrawingID,DrawingNumber,DrawingDescription FROM ENG_Drawing
DrawingID DrawingNumber DrawingDescription etc..
1131 R152-14-01-00-31 DU - 01 etc..
....
1200 R160-02-01-00-21 DU - 12 etc..
....
.....
....
1500 R156-01-01-00-11 DU - 00 etc..
....
.....
2993 R167-09-01-00-21 DU - 04 etc..
2994 R165-10-01-00-40 DU - 25 etc..
2995 R163-13-01-00-01 DU - 24 etc..
2996 R100-12-01-00-61 DU - 21 etc..
2997 R166-09-01-00-21 DU - 21 etc..
2998 R125-14-01-00-02 DU - 32 etc..
2999
3000
.
.
And detail table for drawing table is
DrawingID SeqNbr Drawing_f BOMQuantity ItemQty DrawingreferenceID ItemID
1131 7 0 2 0.574 1231
1131 9 1 4 null 1200 null
....
....
1200 14 1 8 0.560 1100 1555
1200 16 1 2 5.23 1500 1755
....
....
1500 18 0 2 4.350 2684
....
2993 5 0 2 0.061 2125
2993 6 0 2 1.592 1698
2993 7 0 2 2.500 1231
2993 9 1 4 null 1131 null
2993 16 1 2 null 1500 null
2993 18 0 2 4.350 2684
When I give DrawingID as 2993
In need output like this
ITEMID TOTALQTY
1231 9.592 //select((2*2.500) + (4*2*.574)) here (2*2.500)- is BOMQuantity(4)*ItemQty(2.500) for ItemID 2993 and (4*2*.574)- BOMQuantity of DrawingID 1131(4)*BOMQuantity of ItemID 1231 in DRawingID 1131(2)*ItemQty(.574)
1555 71.680 //select(4*4*8*.560) here 4-BOMQuantity of DrawingreferenceID 1131 in DrawingID 2993.Middle 4 is BOMQuantity of DrawingreferenceID 1200 in DrawingID 1131. 8 is BOMQuantity of ItemId 1555 in DrawingId 1200
1698 3.184 //select(2*1.592)
1755 50.944 //select(4*4*2*1.592)
2125 0.122 //select(2*0.061)
2684 0.122 //select((2*4.350)+(2*2*4.350))
ENG_Drawing_BOM contains subdrawings (DrawingreferenceID).they(DrawingreferenceID) have their values in ENG_Drawing table and also have items and subdrawings.
One drawing may have no of subdrawings and that subdrawings can have subdrawings and so on....
I need When i give DrawingID i need Item wise cumulation.The result should be is ITEMID,sum( BOMQuantity * ItemQty) as TOTALQTY.
The problem is,
For exmple
DrawingID has subdrawing with 4 BOMQuantity, i need TOTALQTY 4 times of that subdrawing(S1) items,
if that subdrawing has subdrawings(S2) with 6 BOMQuantity need 4 times of S1 items and 4*6 4 times of S2 items ...It will continue for its inner levels...
I finally need Overall ITEMID wise cumulation
here 2993 as main drawing.1131,1200,1500 are subdrawings and that subdrawings may have sub drawings.I need them also .
Any body????

Answer 1

#Suresh recheck your sample data,what is wrong in my query ?
Declare #drawing table( DrawingID int,SeqNbr int,Drawing_f int,BOMQuantity decimal(5,2),ItemQty decimal(6,3),DrawingreferenceID int,ItemID int)
insert into #drawing
select 1131 , 7, 0,2, 0.574,null,1231 union all
select 1131 , 9, 1,4,null ,1200,null union all
select 1200, 14, 1,8,0.560, 1100,1555 union all
select 1200, 16, 1,2,5.23 , 1500,1755 union all
select 1500, 18, 0,2,4.350, null,2684 union all
select 2993, 5, 0,2,0.061, null,2125 union all
select 2993, 6, 0,2,1.592, null,1698 union all
select 2993, 7, 0,2,2.500, null,1231 union all
select 2993, 9, 1,4,null , 1131,null union all
select 2993, 16, 1,2,null , 1500,null union all
select 2993, 18, 0 ,2,4.350, null,2684
--select * from #drawing
;with cte as
(select * ,1 roots from #drawing where DrawingID=2993
union all
select d.*,case when d.DrawingID=c.DrawingreferenceID then roots+1 else roots end from #drawing d inner join cte c on d.DrawingID=c.DrawingreferenceID
)
select * from cte
#Suresh if your last query is ok then make it accurate
with cte as
(
select d.* , 1 as Nooff,1 roots,d.DrawingID as 'MainDrawing' from ENG_Drawing_BOM d
union all
select d.*,c.BOMQuantity*C.Nooff as Nooff,case when d.DrawingID=c.DrawingreferenceID then roots+1 else roots end ,MainDrawing as 'MainDrawing'
from ENG_Drawing_BOM d inner join cte c on d.DrawingID=c.DrawingreferenceID
)
,CTE1 as
(
select
cte.MainDrawing,
cte.ItemID,
SUM(Nooff*cte.UnitWeight)as 'Wt',
SUM((TotalQty)*Nooff) as 'TotalQty'
from cte
where DrawingReferenceID is null AND MainDrawing = 2993
group by cte.ItemID, cte.MainDrawing
)
select
cte.MainDrawing,
cte.ItemID,
i.ItemDescription,
Wt,
TotalQty
from cte1
inner join STR_Item i on cte.ItemID = i.ItemID
where DrawingReferenceID is null AND MainDrawing = 2993
ORDER BY cte.ItemID

Answer 2

This is exact need ...derived from KumarHarsh reply.
with cte as
(
select d.* , 1 as Nooff,1 roots,d.DrawingID as 'MainDrawing' from ENG_Drawing_BOM d
union all
select d.*,c.BOMQuantity*C.Nooff as Nooff,case when d.DrawingID=c.DrawingreferenceID then roots+1 else roots end ,MainDrawing as 'MainDrawing' from ENG_Drawing_BOM d inner join cte c on d.DrawingID=c.DrawingreferenceID
)
select
cte.MainDrawing,
cte.ItemID,
i.ItemDescription,
SUM(Nooff*cte.UnitWeight)as 'Wt',
SUM((TotalQty)*Nooff) as 'TotalQty'
from cte
inner join STR_Item i on cte.ItemID = i.ItemID
where DrawingReferenceID is null AND MainDrawing = 2993
group by cte.ItemID,
cte.MainDrawing,
i.ItemDescription
ORDER BY cte.ItemID