I have two excel files that share some of the same columns and I'm hoping to merge them together to create one huge data frame in R by matching the columns up. It is very important I do this correctly, as I will be working with this data frame for a while. Below is some example code. In the code, ID would be the shared column and I would like the EndDate column to be added to the BatStart data frame based on the ID. Of course, I will be merging many more columns with much larger date frame than this.
ID <- c("1", "2", "3")
StartDate <- c("2021-06-08", "2021-06-12","2021-07-01")
BatStart <- data.frame(ID, StartDate)
BatStart
ID StartDate
1 1 2021-06-08
2 2 2021-06-12
3 3 2021-07-01
ID <- c("1", "2", "3")
EndDate <- c("2021-06-15","2021-06-25","2021-07-13")
BatEnd <- data.frame(ID, EndDate)
BatEnd
ID EndDate
1 1 2021-06-15
2 2 2021-06-25
3 3 2021-07-13
