How to write set expression?

[#1]

How to write setexpression below conditons

if(guid>=1,count(distinct((guid)))/if(Serialno >=1,count(distinct(Serialno))

Thnks,

[jonathandienst]

Hi

Something like this:

Count({<guid={">=1"}>} Distinct guid) / Count({<Serialno={">=1"}>} Distinct Serialno)

Regards

Jonathan

[#3]

its not giving the output

it giving zero value

[Anonymous]

can u provide us a sample Qvw