Help!! Question about summing query

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Help!! Question about summing query

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Topic

pinecrest515
Starting Member

11 Posts

Posted - 2011-01-26 : 11:24:35

I have a question about aggregating numbers.

Suppose I have a SALES table that whose records are at an item transaction level (i.e. it displays sales by item).

I also have an ITEM table that contains item dept_nbr and sub_cat_nbr.

There is a DEPT table that maps dept_nbr to dept_desc, and a SUB_CAT table that maps sub_cat_nbr to sub_cat_desc.

Question: Suppose I want to find the total sales listed by department and subcategory descriptions. How can I best write the SQL? I don't want to see sales at the item level, only on the department and subcategory levels.

SALES table columns: item_nbr, sales$
ITEM table columns: item_nbr, dept_nbr, sub_cat_nbr
DEPT table columns: dept_nbr, dept_desc
SUB_CAT table columns: sub_cat_nbr, sub_cat_desc

Would this work?

SELECT distinct
dept.dept_desc,
sub_cat.sub_cat_desc,
SUM(sales.sales$)
FROM
dept, sub_cat, item, sales
WHERE
dept.dept_nbr = item.dept_nbr
AND sub_cat.sub_cat_nbr = item.sub_cat_nbr
AND item.item_nbr = sales.item_nbr

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2011-01-26 : 11:36:46

select d.dept_desc,sc.sub_cat_desc,s.item_nbr, sum(s.sales) as TotalSales
from SALES as s
join ITEM as i on i.item_nbr=s.item_nbr
join DEPT as d on d.dept_nbr=i.dept_nbr
join SUB_CAT as sc on sc.sub_cat_nbr=i.sub_cat_nbr
group by d.dept_desc,sc.sub_cat_desc,s.item

No, you're never too old to Yak'n'Roll if you're too young to die.

pinecrest515
Starting Member

11 Posts

Posted - 2011-01-26 : 11:52:41

But this will give sales at item level, with dept and sub_cat desc repeated, right? I would like to find total sales at dept and sub_cat levels.

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2011-01-26 : 11:56:44

I missed that point.
Try this:

quote:
Originally posted by webfred

select d.dept_desc,sc.sub_cat_desc, sum(s.sales) as TotalSales
from SALES as s
join ITEM as i on i.item_nbr=s.item_nbr
join DEPT as d on d.dept_nbr=i.dept_nbr
join SUB_CAT as sc on sc.sub_cat_nbr=i.sub_cat_nbr
group by d.dept_desc,sc.sub_cat_desc
No, you're never too old to Yak'n'Roll if you're too young to die.

No, you're never too old to Yak'n'Roll if you're too young to die.

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