display unique field out of 10 records in sql - sql

Question

My sql query is
select I.[Old Product Code],
I.[Trade Name],
I.[Short Name],
SIL.[BOM Item No_] ,
CASE when SIL.[Dimension Group Code] = 'IOL'
then I.[Group Description]
else I.[Short Name] END as GD,
CASE when SIL.[BOM Item No_] <> ''
then 'Kit' end
from [Sales Invoice Header] SIH, [Sales Invoice Line] SIL, [Item] I
where I.No_ = SIL.No_
and SIL.[Document No_] = 'PEXP1213-153'
and SIH.No_ = SIL.[Document No_]
group by I.[Old Product Code], I.[Trade Name], I.[Short Name],
SIL.[Dimension Group Code], I.[Group Description], SIL.[BOM Item No_]
And my result is
In this out of 21 rows i am having 17 rows as kit. I need to group this kit and to display in Old Product Code as Kit in one row instead of 17 rows.

Answer 1

Looking at what you are trying to do you might be able to use something like this to return the data:
;with data as
(
select I.[Old Product Code],
I.[Trade Name],
I.[Short Name],
SIL.[BOM Item No_] ,
CASE when SIL.[Dimension Group Code] = 'IOL'
then I.[Group Description]
else I.[Short Name] END as GD,
CASE when SIL.[BOM Item No_] <> ''
then 'Kit' end CombinedKit
from SalesInvoiceHeader SIH
inner join SalesInvoiceLine SIL
on SIH.No_ = SIL.[Document No_]
inner join Item I
on I.No_ = SIL.No_
where SIL.[Document No_] = 'PEXP1213-153'
),
d2 as
(
select [Old Product Code],
[Trade Name],
[Short Name],
[BOM Item No_],
GD,
CombinedKit,
row_number()
over(partition by CombinedKit order by [Old Product Code]) rn
from data
)
select
case when combinedkit = 'kit'
then 'Kit' else [Old Product Code] end [Old Product Code],
[Trade Name],
[Short Name],
[BOM Item No_],
GD
--, CombinedKit
from d2
where (CombinedKit = 'Kit' and rn = 1)
or (CombinedKit is null)
See SQL Fiddle with Demo
Edit, if you want to order this in a specific way you can use Order By with a CASE statement:
;with data as
(
select I.[Old Product Code],
I.[Trade Name],
I.[Short Name],
SIL.[BOM Item No_] ,
CASE when SIL.[Dimension Group Code] = 'IOL'
then I.[Group Description]
else I.[Short Name] END as GD,
CASE when SIL.[BOM Item No_] <> ''
then 'Kit' end CombinedKit
from SalesInvoiceHeader SIH
inner join SalesInvoiceLine SIL
on SIH.No_ = SIL.[Document No_]
inner join Item I
on I.No_ = SIL.No_
where SIL.[Document No_] = 'PEXP1213-153'
),
d2 as
(
select [Old Product Code],
[Trade Name],
[Short Name],
[BOM Item No_],
GD,
CombinedKit,
row_number()
over(partition by CombinedKit order by [Old Product Code]) rn
from data
)
select
case when combinedkit = 'kit'
then 'Kit' else [Old Product Code] end [Old Product Code],
[Trade Name],
[Short Name],
[BOM Item No_],
GD
--, CombinedKit
from d2
where (CombinedKit = 'Kit' and rn = 1)
or (CombinedKit is null)
order by
case when combinedkit = 'kit' then 0 else 1 end, [Old Product Code]
See SQL Fiddle with Demo