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Anonymous
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6 years ago
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Calculate duration between 2 rows

My data is showing calls, each event during the call is a new row. For example:

 

Call idQueueEvent dateEventCall transfer
1 2020-02-02 10:00:00Menu 
1Sale2020-02-02 10:02:00Placed in queue 
1Sale2020-02-02 10:03:30ConversationTrue
1Help2020-02-02 10:04:00Placed in queue 
1Help2020-02-02 10:05:00Conversation 
2 2020-02-03 10:00:00Menu 
2Help2020-02-03 10:05:00Placed in queue 
2Help2020-02-03 10:07:00Conversation 

 

I want to calculate the queue waiting time, both after the menu and after a transfer.

 

Total queuetime: 1:30 + 1:00 + 2:00 = 4:30 min
Average per call: 2 min 15 sec

 

I wish I could show but i have been trying but I don't know where to start or if it's even possible to do what I want.