Hello,
My data are like this,
sender , receiver, _time
userA, userB, _time1
userB, userC, _time2
userB, userD, _time3
userC, userD, _time4
I'd like to find the chain of users that send and receive emails. For example userA->sent to userB-> sent to userC and userD , userC->send to userD
my result would be like this
userA, userB, userC, userD
userA, userB, userD
userB, userC, userD
userC, userD
Can you please help me
Thanks in advance
