Hi All,
I would like to match some datasets. Both deliver variables AND cases
which might or might not be present in all datasets:
This sequence
Kunden <- Kunden_2011
Kunden <- merge(Kunden, Kunden_2012,
by.x = "Debitor", by.y = "Debitor")
Kunden <- merge(Kunden, Kunden_2013,
by.x = "Debitor", by.y = "Debitor")
Kunden <- merge(Kunden, Kunden_2014,
by.x = "Debitor", by.y = "Debitor")
Kunden <- merge(Kunden, Kunden_2015,
by.x = "Debitor", by.y = "Debitor")
delivers too few cases. So I guess it does an equi-join.
How can I join the datasets and keep the variables as well as the cases?
I am looking forward to your reply.
Kind regards
Georg
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