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Group by?

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gogetsome
Starting Member

10 Posts

Posted - 2005-12-12 : 12:43:43

Hello, I need some help with a group by. I have a table which contains itemnumber and warehouses. I need to find which itemnumber by group that do not have a warehouses that = 1

I've tried
select itemnumber , warehouses from stuff
where warehouses <> '1' and warehouses > '1'
group by itemnumber , warehouses

But this just eliminates the itemnumber with warehouses that = 1 in the results.

I believe that I need to first group the itemnumber and then determin which of these groups have an itemnumber with a warehouses that do not =1

The problem that I face is that each itemnumber should have a wherehouse of 1 and many other warehouse if the part is also stocked in that warehouse. But they must have 1 for the system to work properly. Well, things happen and some of the itemnumber where the warehouse = 1 were changed and I need to find those which have changed or do not have the default warehouse which = 1.

Sorry for the confusion if I'm not being very clear.

TG
Master Smack Fu Yak Hacker

6065 Posts

Posted - 2005-12-12 : 13:23:39

>>Sorry for the confusion if I'm not being very clear.

Follow these instructions to avoid not being very clear:
http://weblogs.sqlteam.com/brettk/archive/2005/05/25/5276.aspx

but maybe something like this?


select	itemnumber
	,warehouses 
from	stuff
where	itemnumber in 
	(
	select	itemnumber
	from	stuff
	where	warehouses = 1
	group by itemnumber
	having	count(*) = 0
	)
group by itemnumber , warehouses

Be One with the Optimizer
TG

Michael Valentine Jones
Yak DBA Kernel (pronounced Colonel)

7020 Posts

Posted - 2005-12-12 : 13:34:26

This should do it:


select
	a.itemnumber,
	a.warehouses
from
	stuff a
where
	a.itemnumber not in
	(
	select
		b.itemnumber
	from
		stuff b
	where
		b.warehouses = '1'
	)
group by
	a.itemnumber,
	a.warehouses

CODO ERGO SUM

gogetsome
Starting Member

10 Posts

Posted - 2005-12-12 : 14:55:37

quote:

Originally posted by Michael Valentine Jones

This should do it:


select
	a.itemnumber,
	a.warehouses
from
	stuff a
where
	a.itemnumber not in
	(
	select
		b.itemnumber
	from
		stuff b
	where
		b.warehouses = '1'
	)
group by
	a.itemnumber,
	a.warehouses

CODO ERGO SUM

Thank you for taking the time to help with this situation. This solution was what I was looking for. Very clean approach!

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