Hi all, i have this csv file as input. With three columns of child ,parent & relation 
child,  Parent, relation
M10,    Q,    P,
M143,    M10,    P,
M406,    M143,    PL,
M407,    M143,    PL,
M420,    M143,    E,
M421,    M143,    E,

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Now for each of the child I want their relations traced back to the parent 'Q'.

For example conside child 'M407' (3rd row) M406<-M143<-M10<-Q = P.P.PL

For child M10 (first row), Q is the parent, so M10<-Q = P

For last row M421 we have M421<-M143<-M10<-Q = P.P.E

I want such relations for all the 6 childs. Please help

In reply to constructing a tree from csv file by zing

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