Hi, new to the forum, hope you peeps can help me!?

I have a CSV file of user data relating to session times on a server.
The columns are as follows: username, uniqueID, loginTime, logoutTime.

What I want to be able to do is calculate for each user:

a) their individual session length of time
b) their total sessions length of time

OK simple enough and I have done this manually thus far by sorting the
data by username and then creating a new column for 'sessionTime' and
another for 'totalSessionTime' with loginTime subtracted from
logoutTime (with the IF to allow for 24Hr time calculations)

I have been able to automate it slightly with

=SUMIF(A1:A50000,"username",G1:G10000)

where "username" represents an actual username that exists.

What I really would like to be able to do is automate the process so
that when the file is updated with the latest data, and therefore
probably new usernames that were not present before, all individual
usernames are calculated automatically without me having to manually
set usernames in each cell formula...

Does this make sense?


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optimusprym8
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