upsertR is a simple R package that supports upserting an R dataframe to a target SQL server
Install the package directly from github with devtools. Run the first line if you do not currently have devtools installed.
# install.packages('devtools')
devtools::install_github('HenrikVarmer/upsertR')
There is only one core function in upsertR: upsert(), which lets you upsert a dataframe to a target SQL server. See below for an example.