I am trying to use an if statement with a variable in my expression and I get no results. The variable works when I use the variable on it's own but when used with the if I get no results.
I have tried:
if(OrderQtr='Apr-Jun 2018',$(vAvgOrderCost),0)
if(OrderQtr='Apr-Jun 2018',sum($(vAvgOrderCost)),0)
sum($(vAvgOrderCost)if(OrderQtr='Apr-Jun 2018',0))
Nothing seems to work. Thanks
Variables in QlikView are used as a text replace feature, so be carefull. If your variable hold a value like 1,345 an expression like "if(OrderQtr='Apr-Jun 2018',$(vAvgOrderCost),0)" will be translated into "if(OrderQtr='Apr-Jun 2018',1,345,0)" which by itself will be a syntax error.
Something like :
Num(if(OrderQtr='Apr-Jun 2018','$(vAvgOrderCost)','0'))
would be a safe way to go.
the if() syntax should work like this if(test,true,false)
So looking at your examples I suspect this is what you are trying to do
sum(if(OrderQtr='Apr-Jun 2018',$(vAvgOrderCost),0))
Related
Im trying to create a sql query dynamically with the following syntax:
Company.joins(:founder_persons)
.where("people.first_name like people[:first_name]", {people: {first_name: 'm%'}})
But running this on the rails console gives me TypeError: can't quote Array. Im guessing this is not how we use the where string? What's the right way to fix this error? Thanks.
One reason this error can occur is with a nested array used as SQL value.
Example:
Article.where(author: ['Jane', 'Bob'])
works, but:
Article.where(author: ['Jane', ['Bob']])
would give the error. A quick fix would be to run flatten on the array.
(Mentioning this since this page comes up when searching for the confusing error "Can't quote array".)
You could bind any value and then assign it, this way they should coincide in numbers, like:
Model.joins(:join_table)
.where('models.first_attribute LIKE ? AND models.second_attribute LIKE ?', value_for_first_attr, value_for_second_attr)
If using an array you should access each index you want to compare, or you can precede a splat *, and specify just one value, like:
Model.joins(:join_table)
.where('models.first_attribute LIKE ? AND models.second_attribute LIKE ?', *array_of_values)
Note although this way you're passing the "whole" array it should also coincide in size or numbers, otherwise it'd raise an ActiveRecord::PreparedStatementInvalid error depending if there are more or less elements than needed.
Is there any reason that this syntax shouldn't work in Qlikview load script??
Let v_myNumber = year(today());
Let v_myString = '2017-08';
If left($(v_myString),4) = text($(v_myNumber)) Then
'do something
Else
'do something else
End If;
I've tried both ways where I convert variable string to number and evaluate against the number variable directly and this way. They won't evaluate to equivalence when they should..
Left function is expecting a string as is getting something else as a parameter. As you are currently doing, the function will be called as Left(2017-08, 4) which is unhandle by QlikView.
If you use Left('$(v_myString)',4), it will evaluate as Left('2017-08', 4) as work as expected. Just adding quotes around the variable it should work.
Although QlikView calls them variables, they should really be seen as "stuff to replaced (at sometimes evaluated) at runtime", which is slightly different from a standard "variable" behaviour.
Dollar sign expansion is a big subject, but in short:
if you are setting a variable - no need for $().
if you are using a variable - you can use $(). depends on its context.
if you are using a variable that needs to be evaluated - you have to use $().
for example in a load script: let var1 = 'if(a=1,1,2)' - here later on the script you will probably want to use this variable as $(var1) so it will be evaluated on the fly...
I hope its a little more clear now. variable can be used in many ways at even can take parameters!
for example:
var2 = $1*$2
and then you can use like this: $(var2(2,3)) which will yield 6
For further exploration of this, I would suggest reading this
I am new to rails. I am trying to figure out how to use model method inside the sum() sql function. I tried searching for the solution but couldn't find one. Here's the code snippet :
SUM(indents.total_payable_amount_paid) AS sum_comm_t_amount_payable_paid
I want to use method called total_payable_amount_paid defined inside indent model. But it always gives an error:
PGError: ERROR: column indents.total_payable_amount_paid does not exist.
So what's the solution for this problem? Thanks in advance!
The problem is that your SUM (which i assume it's in a query string) takes indents.total_payable_amount_paid as part of that string.
To avoid that you could use string interpolation to set the value you want, like this:
"SUM(#{indents.total_payable_amount_paid}) AS sum_comm_t_amount_payable_paid"
So, lets say indents.total_payable_amount_paid returns 250, then the above code will generate this string:
"SUM(250) AS sum_comm_t_amount_payable_paid"
But, using SUM will make no effect, since you are giving one value, so you can accomplish the same thing without it:
"#{indents.total_payable_amount_paid AS sum_comm_t_amount_payable_paid"
#=> "250 AS sum_comm_t_amount_payable_paid"
I have the following variables:
[string]$eth_netmask = "ext_netmask"
[string]$ext_netmask = "255.255.252.0"
$($eth_netmask) is returning ext_netmask. I was expecting 255.255.252.0
What am I doing wrong?
Thanks for the help in advance!
The command $eth_netmask returns the value of the variable named eth_netmask. The expression $(something) has nothing to do with variables, but instead evaluates the contents of the parentheses before evaluating the rest of the statement. That means that the statement $($eth_netmask) will evaluate in two steps:
1: $($eth_netmask) evaluates to the command "ext_netmask"
2: "ext_netmask" evaluates as a command which has the result of printing ext_netmask to the output.
This format is unnecessary since variables are normally resolved before the rest of the command anyway. My recommendation would be to avoid needing to do this at all if there is any alternative. Putting this kind of roundabout referencing into a piece of code can only cause problems. However, if you can't avoid it for some reason, it is possible to reference a variable the name of which is stored in another variable.
[string]$eth_netmask = "ext_netmask"
[string]$ext_netmask = "255.255.252.0"
Get-Variable -Name $eth_netmask -ValueOnly
This is the point at which the $(something) syntax becomes useful. If you need to use the value that you have just returned in another command, such as if the value was an ip that you were trying to ping, you might do something like this:
Test-Connection $(Get-Variable -Name $eth_netmask -ValueOnly)
Example from Qlikview help:
sum( {$<Year = {“>1978<2004”}>} Sales )
I try this code, but it did't works
Count( {$<Damages.DamageDate = {">Min(OtherDate)"}>} Damages.Id)
Looks like qlikview did't support dates in inequalities.
Any way if anyowne know how to do things like this please help.
As I remember, you must use a dollar-sign expansion within the set expression. Look up "Set Modifiers with Dollar-Sign Expansions" in the manual. The Min function will then be evaluated and so the set expression should work.
It will look sg like this:
Count( {$<Damages.DamageDate = {">$(=Min(OtherDate))"}>} Damages.Id)
Or perhaps
Count( {$<Damages.DamageDate = {">$(#=Min(OtherDate))"}>} Damages.Id)
I'd use
// Reopen or share this result by using the following Url:
// http://tools.qlikblog.at/SetAnalysisWizard/?sa=J0LC
Count({$<[Damages.DamageDate]={">$(=Min(OtherDate))"}>}[Damages.Id])
Note: I think you should square brackets for qualified field names like "Damages.DamageDate".
You can use the Set Analysis Wizard to change the expression.
Hope this helps!
Regards
Stefan
Another posibility to your question is create a variable for example: vMinDate = Min(OtherDate)
And then you can use your variable in the expression like this:
Count( {$<Damages.DamageDate = {'$(vMinDate)'}>} Damages.Id)
I not find the way how to calculate what I need in qlikview, but I workaround it by make all calculation in sql query.
UPDATE:
Also combination of count and if may be helpful. And don't forget place user selected values into document variables before use it in expressions