[R] dataframe help

[Rajasekaramya]

 hi there

I have a dataframe

abc 123 345
abc 345 456
lmn 567  345
hkl 568 535
lmn 096  456
lmn 768 094

i want the uniques of column 1 and there corresponsing column 2 and 3
output
abc 123 345
lmn 567  345
hkl 568 535

cbind(DF1[,1],DF1[which(unique(DF1[,1]),c(2,3)])
but didnt work

kindly let me know how to go abt it

ramya
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