Group By Select Top 1 Rows

Hi Guys,
I tried Group By from Select Top 1 Records, As below the script wasn't work.
Please help.
SELECT TOP 1 NR.SHGId, NR.Amount
FROM NEW_DCB_REPORT NR
WHERE NR.SHGId = ND.SHGId
AND NR.ShgMemberId = ND.ShgMemberId
AND NR.LoanNumber = ND.LoanNumber
GROUP BY NR.SHGId,NR.Amount
ORDER BY NR.LedgerNumber DESC
SHGId
SHGMemberId
LoanNumber
Amount
Select Top 1 Row
1028
147852
1
1000
Select Top 1 Row
1028
147853
1
2000
Select Top 1 Row
1028
147854
1
1000
Select Top 1 Row
1028
147855
1
1000
5000
I expected the results are:
SHGId
Amount
1028
5000

Yes I did it.
Select SHGId,
SUM(Amount)
amt FROM
SELECT NR.SHGId,
NR.Amount,
, Row_number()
Over(partition
by NR.SHGId,
NR.ShgMemberId , NR.LoanNumber
Order
by NR.LedgerNumber
DESC
) rn
FROM NEW_DCB_REPORT NR
JOIN
NEW_DCB_REPORT ND
ON
NR.SHGId
=
ND.SHGId
AND NR.ShgMemberId
= ND.ShgMemberId
AND NR.LoanNumber
= ND.LoanNumber
) t
Where rn=1
GROUP
BY SHGId
I just changed above the script Partition by add one more column and
[yourNDTable]
Should come NEW_DCB_REPORT table.
However, It shows below the error ,. Please help.
Invalid object name 'NEW_DCB_REPORT'.

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PL
KM
KT
KM
HG
TG
HG
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Sir
The first query which i had given is correct and it works for me. Now i want to add one more
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Another way,
SQL> with test_dup
as
     select 'b1' col_bill, 's1' col_serv, 'c' col_sys from dual union all
     select 'b1', 's1', 'g' from dual union all
     select 'b1', 's2', 'c' from dual union all
     select 'b1', 's2', 'g' from dual union all
     select 'b2', 's2', 'g' from dual union all
     select 'b2', 's3', 'c' from dual union all
     select 'b2', 's3', 'g' from dual union all
     select 'b3', 's3', 'c' from dual
select col_bill, col_serv, min(col_sys) col_sys
    from test_dup
   where col_sys in ('c', 'g')
group by col_bill, col_serv
having count( * ) > 1
     and count(nullif(col_sys, 'g')) > 0;
CO CO C
b1 s1 c
b2 s3 c
b1 s2 c
3 rows selected.Regards
Peter
Edited by: Peter on Feb 18, 2009 1:10 AM
- Added test data, thanks Karthick

Group By Select Top 1 Rows

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