r - Delete rows that are repeated for only some of the columns of the dataframe

Question

This question already has answers here: question from:https://stackoverflow.com/questions/65932269/delete-rows-that-are-repeated-for-only-some-of-the-columns-of-the-dataframe

Answer 1

I think you forgot the first row

df[!duplicated(df[,c("a","b","c")]),]

  a b     c d  e
1 1 4   hey q  2
5 4 6    hi d  6
6 7 8 hello e 23
7 8 3 salam y  4