Closed:Combined two data frame of unequal length with similar header but difference in data in two columns

Question

[Maneesh.Misra]

df1 <- data.frame(ID1 = c(1:3),ID2 = c(493:495),ID3 = c(2635:2637),X1 = c("15:03", "15:01", "03:01"),X2 = c("3","3","7"),X3 = c("2","2","5"),X4 = c("6","6","5"),X5 = c("1","24","3")) df2 <- data.frame(ID1 = c(1:5),ID2 = c(493:497),ID3 = c(2635:2639),X1 = c("15", "15", "03","07","02"),X2 = c("03:01","03:05","07","15:01","34"),X3 = c("2","2","5","34","36"),X4 = c("6","6","5","4","6"),X5 = c("1","24","3","39","40"))

I want combined_df looked like this:

data_combined <- data.frame(ID1 = c(1:5),ID2 = c(493:497),ID3 = c(2635:2639),X1 = c("15:03", "15:01", "03:01","07","02"),X2 = c("03:01","03:05","07","15:01","34"),X3 = c("2","2","5","34","36"),X4 = c("6","6","5","4","6"),X5 = c("1","24","3","39","40"))

I tried this but not get the desired result:

data_combined <- Reduce(function(x, y) merge(x, y, all=TRUE), list(df1,df2))