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# T-Sql Query problem

Posted on 2010-08-19
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Hi, I am having data in a table  as below.

DMDGROUP      WEEKDATE      QTY
9896138670      6/10/2008      5
9896138670      13/10/2008      6
9896138670      27/10/2008      11
9896138670      3/11/2008      8
9896138670      10/11/2008      7
9896138670      1/12/2008      9
9896138670      8/12/2008      6
9885544076      13/10/2008      4
9885544076      3/11/2008      3
9885544076      10/11/2008      8
9885544076      17/11/2008      10
9885544076      1/12/2008      1

Now, I would like to include missing weeks with columns having QTY=0 and also the weekcount starting from 1 for each DMDGROUP. So, it looks like the below table.

DMDGROUP      WEEKDATE      QTY      weekcount
9896138670      6/10/2008      5      1
9896138670      13/10/2008      6      2
9896138670      20/10/2008      0      3
9896138670      27/10/2008      11      4
9896138670      3/11/2008      8      5
9896138670      10/11/2008      7      6
9896138670      17/11/2008      0      7
9896138670      24/11/2008      0      8
9896138670      1/12/2008      9      9
9896138670      8/12/2008      6      10
9885544076      13/10/2008      4      1
9885544076      20/10/2008      0      2
9885544076      27/10/2008      0      3
9885544076      3/11/2008      3      4
9885544076      10/11/2008      8      5
9885544076      17/11/2008      10      6
9885544076      24/11/2008      0      7
9885544076      1/12/2008      1      8

Can someone help me with as soon as possible.

Thanks
0
Question by:rpk2606
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LVL 53

Expert Comment

ID: 33480916
i suggest create a table numbers (n:int) and put 0,1,...,9

create view weeks as
select 10*d1.n+d2.n from numbers d2, numbers d1 where 10*d1.n+d2.n < 52

this will give use 0,1,2,...,51
0

LVL 58

Accepted Solution

cyberkiwi earned 500 total points
ID: 33480949
;with dg as (select DMDGROUP,MIN(Weekdate) as Week1, MAX(WEEKDATE) as LastWeek from tbl group by DMDGROUP)
select dg.DMDGROUP,wk.WeekDate,isnull(t.QTY,0),wk.WeekNo
FROM dg
cross apply (
select w.number+1 as WeekNo, dateadd(wk,w.number,dg.Week1) as WeekDate
from master..spt_values w
where w.type='P' and w.number<=DATEDIFF(WK,dg.Week1,dg.LastWeek)) wk
left join tbl t on t.DMDGROUP=dg.DMDGROUP and t.WEEKDATE=wk.WeekDate
order by dg.DMDGROUP,wk.WeekDate
0

LVL 53

Expert Comment

ID: 33480998
and this one will give

select min(weekdate) middate, max(weekdate) maxdate, DATEPART(WK , min(weekdate)) minweek, DATEPART(WK , max(weekdate)) maxweek, dmdgroup from dmd group by dmdgroup

2008-10-13 00:00:00      2008-12-01 00:00:00      42      49      9885544076
2008-10-06 00:00:00      2008-12-08 00:00:00      41      50      9896138670
0

LVL 53

Expert Comment

ID: 33481004
i give up ;)
0

Author Comment

ID: 33481079
awesome man...thanks a lot cyberkiwi
0

LVL 58

Expert Comment

ID: 33481116
You're welcome!
0

Author Comment

ID: 33484759
Hi Cyberkiwi..I am trying to run this.

select dg.DMDUNIT,dg.DMDGROUP,wk.weekdate,isnull(t.QTY,0),wk.WeekNo
cross apply (
select w.number+1 as WeekNo, dateadd(wk,w.number,dg.Week1) as weekdate
from master..spt_values w
where w.type='P' and w.number<=DATEDIFF(WK,dg.Week1,dg.LastWeek)) wk
left join week t on t.dmdunit=dg.dmdunit and t.DMDGROUP=dg.DMDGROUP and t.weekdate=wk.weekdate
order by dg.dmdunit,dg.DMDGROUP,wk.weekdate

But I am getting this error now.

Msg 208, Level 16, State 1, Line 1
Invalid object name 'week'.
0

LVL 58

Expert Comment

ID: 33484875
;with dg as (
select DMDGROUP,MIN(Weekdate) as Week1, MAX(WEEKDATE) as LastWeek
group by DMDGROUP)
select dg.DMDGROUP,wk.WeekDate,isnull(t.QTY,0),wk.WeekNo
FROM dg
cross apply (
select w.number+1 as WeekNo, dateadd(wk,w.number,dg.Week1) as WeekDate
from master..spt_values w
where w.type='P' and w.number<=DATEDIFF(WK,dg.Week1,dg.LastWeek)) wk
left join SCADHOC.rpk.dg t on t.DMDGROUP=dg.DMDGROUP and t.WEEKDATE=wk.WeekDate
order by dg.DMDGROUP,wk.WeekDate

The first 4 lines creates a virtual table named "dg".  It is heavily referenced further down.
The 2nd to last row is where you plug in your actual table name (and aliased at "t")
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