count

[ranne_78]

How to perform a count for a column based on another two columns in one data item.

Let's say I have 3 data items Student,subject,section

I need to calculate distinct count for  student who is taking particular subject from  those many number of sections. But in our report we r showing calculated item having  distinct combinations of student taking  subject frome those  sections. we r not populating these three dataitems (student,subject,section)

any ideas please

Thanks in advance