sql partiton by suppress repeating values - sql

Question

Using SQL Server (2005/2008)
Is there an easy way to suppress the repeating sub & grand totals?
select h.salesmanno
,c.custname
,h.amt
,sum(h.amt) over (partition by salesmanno) as subtotal
,sum(h.amt) over (partition by null) as grandtotal
from hdr h, cust c WHERE h.custno = c.custno
and h.hdate = '6/8/2009'
basically suppress (or null) except the last position, before the group change
Thanks!!

Answer 1

What database is this? On SQL Server, something like this would do:
select
salesmanno, custname, amt
, case when subtotal_no = subtotal_count then subtotal end as subtotal
, case when total_no = total_count then subtotal end as total
from (
select
h.salesmanno
, c.custname
, h.amt
, sum(h.amt) over (partition by salesmanno) as subtotal
, sum(h.amt) over (partition by null) as grandtotal
, row_number() over (partition by salesmanno order by custname) as subtotal_no
, row_number() over (partition by null order by salesmanno, custname) as as total_no
, count(*) over (parition by salesmanno) as subtotal_count
, count(*) over (parition by null) as total_count
from hdr h, cust c
WHERE h.custno = c.custno
and h.hdate = '6/8/2009'
) a
order by total_no
Shorter version, more sorting for the database, maybe less obvious what's going on:
select
salesmanno, custname, amt
, case when subtotal_no = 1 then subtotal end as subtotal
, case when total_no = 1 then subtotal end as total
from (
select
h.salesmanno
, c.custname
, h.amt
, sum(h.amt) over (partition by salesmanno) as subtotal
, sum(h.amt) over (partition by null) as grandtotal
, row_number() over (partition by salesmanno order by custname desc) as subtotal_no
, row_number() over (partition by null order by salesmanno desc, custname desc) as as total_no
from hdr h, cust c
WHERE h.custno = c.custno
and h.hdate = '6/8/2009'
) a
order by total_no desc
Alternatively, using ROLLUP to generate subtotal and total rows:
select
h.salesmanno
, c.custname
, sum(h.amt) as amt
from hdr h, cust c
WHERE h.custno = c.custno
and h.hdate = '6/8/2009'
group by
h.salesmanno
, c.custname
with rollup
order by
h.salesmanno
, c.custname
To get the results in the proper order, change the order by to something like this:
order by
grouping(h.salesmanno)
, h.salesmanno
, grouping(c.custname)
, c.custname

Answer 2

Nest this in a subquery and add your filter in a WHERE:
SELECT *
FROM (
select h.salesmanno ,c.custname ,h.amt ,sum(h.amt) over (partition by salesmanno) as subtotal
,sum(h.amt) over (partition by null) as grandtotal
from hdr h, cust c WHERE h.custno = c.custno and h.hdate = '6/8/2009'
) AS X
WHERE whatever