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Hi,
I asked a question yesterday, which has been answered but I have an additional question that takes it that step further. I will repeat the first question then move on to my actual question:
First question:
Say I have a straight table with 4 fields:
year,
quarter,
month,
quantity,
I would like to add a 5th field which is an aggregate function but only grouped by the year, i.e. I want to add quanity_year which is the sum of quantity for the year. Can I do this using an expression?
example data below (for illustrative purposes):
table
year quarter month quantity year_quanity
2011 1 1 3 14
2011 2 . 5 14
2011 3 . 6 14
2012 1 . 8
ANSWER: defining year_quantity as an expression defined as =sum(TOTAL <year> quantity). This works fine and achieve what I required as long as the year field is included in the straigh table.
Actual question:
Say I have the same data (as in table above) but this time I want to have a concatination of year and month as one field, then the sum of quantity. In other words, I want to remove the fields year, quarter, month and only have 3 fields, as below.
year_month quantity year_quanity
2011 1 3 14
2011 . 5 14
2011 . 6 14
2012 . 8
This however does not work as now the field year is not included in the straight table and the year_quantity expression stops working. The expression ends up giving me a total quanity over the whole dataset and does not factor in year at all.
Any ideas on how I can get the sum of quantity grouped by year but without actually including the year in the straight table? I know I could do this as a preporcessing step (say via sql) or via the load script but I was hoping to do this via an expression.
Regards
Revlin
Hi
Try something like
Sum(Aggr(Sum(If(Left(year_month, 4) = year, quantity)), year, year_month))
(You might not need year_month as the second parameter to the Aggr)
If that does not work, I suggest that you post a sample so that we can see how to do this with your data model.
Regards
Jonathan
Hi Jonathan
Sorry that expression does not work. Also, cannot attach a qliview file as I am using the tril/personal edition which means I can only use local files created on my own version of qlikview.
Revlin
Using personal edition does not stop you posting a qvw file - I will still be able to read it as I have licensed copy of QV (as will many others who may also be able to help you).
Once I see how to do what you are requesting, I can post the expression or script text here for you to try in your model.
Regards
Jonathan
Hi,
Pls. have a look at the attached file.
I only hid the dimensions from presentation tab.
Best regards,
Hi Jonathan
ok - please see attached Qlikview file.
Rgds
Revlin
Couldn't attach the file to the reply so had to attach it to the question above.