merge/combine columns with same name but incomplete data

Question

I have two data frames that have some columns with the same names and others with different names. The data frames look something like this:

df1
      ID hel         


        

Answer 1

We could use my package safejoin, do a left join and deal with the conflicts using dplyr::coalesce

# # devtools::install_github("moodymudskipper/safejoin")
library(safejoin)
library(dplyr)

safe_left_join(df1, df2, by = "ID", conflict = coalesce)
# # A tibble: 5 x 7
#      ID hello world hockey soccer football baseball
#                 
# 1     1     2     3      7      4       43        6
# 2     2     5     1      2      5       24       32
# 3     3    10     8      8     23        2       23
# 4     4     4    17      5     12        5       15
# 5     5     9     7      3     43       12        2