Issue with full_join(): new rows that do not belong to any data frame

Hi @integrity! Welcome to RStudio Community!

Can you please provide a minimal REPRoducible EXample (reprex)? A reprex makes it much easier for others to understand your issue and figure out how to help.

Typically this will include:

  • a toy data set (or in your case two toy datasets)
  • the code you are using
  • the output and/or error messages you are getting
  • your desired output

By providing these things, especially with the help of the reprex package, you have a much better shot at getting the help that you are looking for!