Hi All, I have 2 data sets for parents and child, like this: Set A ID Mother_ID Father_ID 1 . 1 2 2 . 3 . . Set B ID X 1 a 2 b 3 c Question: How can I merge two data sets to get a data set like this ( 3 is a child): ID X X_Mother X_Father 3 c b a Thanks!
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