topic Re: nested variables in QlikView

nested variables

frinfo — Thu, 29 Jun 2017 07:53:13 GMT

Hi everybody,

it's my first post on this community.

I have defined 2 variables (var1,var2). The first variable is an expression of fields extracts from my LOAD and it works well. var1 = Sum([Field1])+Sum(Field2])

The second var is an expression of my first var (var1) and some fields extracts from my LOAD. In this case my expression returns null, because it looks like it not evaluate my first var. var2 = $(var1) + sum([Field3])

How can i use a var in the expression of another var?

Best regards

Re: nested variables

vishsaggi — Thu, 29 Jun 2017 16:32:47 GMT

Try this may be:

SET vFlag = = Sum(Field1) + Sum(Field2);

SET vFinal = = $(vFlag) + Sum(Field3);

Re: nested variables

frinfo — Fri, 30 Jun 2017 10:29:30 GMT

I attach the image of my problem:

The column [expression] is made by this expression:

=($(Qtà 1 Lvl DiBa)*[Qtà 2° Livello])+($(Qtà 1 Lvl DiBa)*(if(isnull([Sfrido % Medio]),0,[Sfrido % Medio]))/100)

The column [variables] is made by this expression:

=$(Qtà 2 Lvl DiBa)

In my sheet i have defined in "view variables..."

The expression of the column [expression] (marked green) is the same expression defined in the variable [Qtà 2 Lvl DiBa] set in the column [variables]

My question is: why the result of column [variables] is "-" (null) and in the result of column [expression] is correct?

I hope i have explained the situation.

Thank you in advance

Re: nested variables

sunny_talwar — Fri, 30 Jun 2017 13:19:34 GMT

Try to remove this equal sign here

or if you want to use the equal sign, try to use your variable without a dollar sign expansion and see if that helps you resolve your issue.

Re: nested variables

vishsaggi — Fri, 30 Jun 2017 13:22:01 GMT

Can you try using quotes around your variables and try? If not could you please upload this sample to work on it quickly?

Like: Can you try this

= ('$(Qtà 1 Lvl DiBa)' * [Qtà 2° Livello])+ ( '$(Qtà 1 Lvl DiBa)' * (if(isnull([Sfrido % Medio]),0,[Sfrido % Medio]))/100)

Re: nested variables

effinty2112 — Fri, 30 Jun 2017 13:25:51 GMT

Hi Francesco,

You could try RangeSum( $(var1) , sum([Field3])) instead of ' + '. Rangesum treats a non numeric or a null argument as a zero rather than throwing an error like '+'. Maybe that will solve the problem.

Cheers

Andrew

Re: nested variables

frinfo — Mon, 03 Jul 2017 15:27:06 GMT

Thank to everyone for trying to help me.

The answer of Sunny solve my problem.

Best regards