Need help understanding SUM - sql

Question

I would like to see the results total the received column and only return the item id once with the total received. Can someone explain why this is not working and help me get to where I need to be?
EDIT - Id like the results to be
Item A - 65
Item B - 52
Item C - 150
instead of what I am getting currently:
Item A - 15
Item A - 20
Item A - 30
Item B - 10
Item B - 15
etc
THANKS!
select S.supplier_id,
s.supplier_name,
ph.po_no,
ph.order_date,
ph.location_id,
im.item_id,
im.item_desc,
invs.supplier_part_no,
sum( pl.qty_received) as received,
pl.unit_price
from po_line pl
inner join po_hdr ph on ph.po_no = pl.po_no
inner join supplier s on s.supplier_id = ph.supplier_id
inner join inv_mast im on im.inv_mast_uid = pl.inv_mast_uid
left join inventory_supplier invs on invs.supplier_id = s.supplier_id
and invs.inv_mast_uid = im.inv_mast_uid
where ph.order_date between '2014-01-01' and '2014-12-31'
and ph.supplier_id = '101315'
and ph.delete_flag != 'Y'
and ph.complete = 'y'
and pl.delete_flag != 'y'
and pl.cancel_flag != 'y'
and ph.cancel_flag != 'y'
Group by
pl.qty_received,
im.item_id,
S.supplier_id,
s.supplier_name,
ph.po_no,
ph.location_id,
im.item_desc,
invs.supplier_part_no,
pl.unit_price,
ph.order_date
order by item_id

Answer 1

The problem is that the aggregate is grouping on other, changing values that cause separation in your data.
select S.supplier_id, -- values are the same, but is this necessary in your result set; if this value changes, you would have the separation in your data
s.supplier_name, -- cannot see in your picture, but these are likely all the same
ph.po_no, -- values are different, is this necessary in your result set?
ph.order_date, -- values are different, again, is this necessary in your result set?
ph.location_id, -- values are the same, but is this necessary in your result set; if this value changes, you would have the separation in your data
im.item_id, -- the primary grouping factor
im.item_desc, -- the description of the primary grouping factor (should not change per record)
invs.supplier_part_no, -- values are the same, but is this necessary in your result set; if this value changes, you would have the separation in your data
sum( pl.qty_received) as received, -- the aggregate you are performing
pl.unit_price -- we cannot see this in your picture, but this could also be a changing value that could cause separation in your data, is it necessary in your result set?
from po_line pl
inner join po_hdr ph on ph.po_no = pl.po_no
inner join supplier s on s.supplier_id = ph.supplier_id
inner join inv_mast im on im.inv_mast_uid = pl.inv_mast_uid
left join inventory_supplier invs on invs.supplier_id = s.supplier_id
and invs.inv_mast_uid = im.inv_mast_uid
where ph.order_date between '2014-01-01' and '2014-12-31'
and ph.supplier_id = '101315'
and ph.delete_flag != 'Y'
and ph.complete = 'y'
and pl.delete_flag != 'y'
and pl.cancel_flag != 'y'
and ph.cancel_flag != 'y'
Group by -- the Group by clause should change with a change in the columns selected
pl.qty_received, -- the aggregate should also, likely, not be part of the group by clause
im.item_id,
S.supplier_id,
s.supplier_name,
ph.po_no,
ph.location_id,
im.item_desc,
invs.supplier_part_no,
pl.unit_price,
ph.order_date
order by item_id
-- an example of how this might look
select S.supplier_id,
MAX(s.supplier_name),
im.item_id,
MAX(im.item_desc),
sum( pl.qty_received) as received,
from po_line pl
inner join po_hdr ph on ph.po_no = pl.po_no
inner join supplier s on s.supplier_id = ph.supplier_id
inner join inv_mast im on im.inv_mast_uid = pl.inv_mast_uid
left join inventory_supplier invs on invs.supplier_id = s.supplier_id
and invs.inv_mast_uid = im.inv_mast_uid
where ph.order_date between '2014-01-01' and '2014-12-31'
and ph.supplier_id = '101315'
and ph.delete_flag != 'Y'
and ph.complete = 'y'
and pl.delete_flag != 'y'
and pl.cancel_flag != 'y'
and ph.cancel_flag != 'y'
Group by
S.supplier_id,
im.item_id
order by item_id