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Removing duplicates from a report

Question asked by med on Nov 8, 2011
Latest reply on Nov 8, 2011 by philmodjunk


Removing duplicates from a report


I have a file which contains a list of services provided by teachers. Each record contains date , time, teachers name, customer name and service type. Some services are private lessons and some are group training sessions.

I am trying to produce a list of services given by a  particular teacher but I want to list only one line in the case the service is a group, because I am interested in knowing how many sessions the teacher taught not how many students were taught.

How can I write a script to exclude all duplicates except one of each (duplicates identified by date+time+teachers name)