topic Re: Double counting of values with Group by function in QlikView

Double counting of values with Group by function

Anonymous — Tue, 24 Oct 2017 12:33:02 GMT

I am trying to group by purchase orders to count the total qty.

The results are double counting.

I have a unique key for each row and have tried autonumber, both have failed in reducing the duplication.

Issue:

result should be Qty 5.

Group by incorrectly return Qty 10.

Raw data:

POitemKey	Qty	TrueKey
4500803485\|00010	-5	2016\|5000200614\|0001
4500803485\|00010	5	2016\|5000200613\|0001
4500803485\|00010	5	2016\|5000208014\|0001

Group by code...

NoConcatenate

POReceived:

LOAD

POitemKey as POitemKey_Open,

Qty as QtyReceived,

Key

From table123

Where [MVT_Type]='101' OR [MVT_Type]='102'; //receipts and returns

NoConcatenate

POReceived2:

LOAD

POitemKey,

Sum(Qty) as QtyFinal

RESIDENT POReceived

Group by POitemKey;

drop table POReceived;

Results after groupby

POitemKey	QtyFinal
4500803485\|00010	10

Math...[=5+5+(-5) = 5]Result should be QtyFinal = 5.

I have also tried autonumber.

Please any suggestions are greatly appreciated!!!

Re: Double counting of values with Group by function

RonaldDoes — Tue, 24 Oct 2017 12:40:59 GMT

Hi Brandon,

I think you're mixing up your keys (or I'm not getting it...)

table123:
LOAD * INLINE [
    POitemKey, Qty, TrueKey
    4500803485|00010, -5, 2016|5000200614|0001
    4500803485|00010, 5, 2016|5000200613|0001
    4500803485|00010, 5, 2016|5000208014|0001
];


NoConcatenate
POReceived:
LOAD
POitemKey as POitemKey_Open,
Qty as QtyReceived,
TrueKey as Key
Resident table123;

NoConcatenate
POReceived2:
LOAD
POitemKey_Open,
Sum(QtyReceived) as QtyFinal
RESIDENT POReceived
Group by POitemKey_Open;
drop table POReceived;

produces:

which is what I reckon you were trying to achieve, right?

Please find the attached demo.

Hope this helps you.

With kind regards,

Ronald

Re: Double counting of values with Group by function

Anonymous — Wed, 25 Oct 2017 14:54:33 GMT

Hi Ronald,

I agree with your example and it does work with the inline statement, but something weird is happening. Here is an example. Every time I try to sum the quantities or group by, it does not add properly.

Things I have tried:

1) Store the table and open in a new session of qlikview.

2) Format Qty field while loading as a num() to ensure that the negative sign is not affecting it.

3) NoConcatenate

The only thing I can get to work is Set Analysis.

sum(Qty) always seems to double the counts which doesn't make sense because the field 'Key' is a perfect Key.

If I group by below and sum qty I would expect to get 5. But that does not happen. Very odd.

Yet if I load inline as you show, it does work.

Thanks for the help,

Brandon

Re: Double counting of values with Group by function

RonaldDoes — Wed, 25 Oct 2017 15:05:19 GMT

Hi Brandon,

I suspect your source table has duplicate entries.

Can you load them with RecNo() to ensure every row is unique?

See: rowno() and recno()

With kind regards,

Ronald