dataset2
another CrunchDataset, or possibly a data.frame. If
dataset2 is not a Crunch dataset, it will be uploaded as a new
dataset before appending.
confirm
boolean: should the user be forced to review and accept
any automatically resolved conflicts between dataset1 and
dataset2? Defaults to TRUE when occurring in an interactive
R session, FALSE otherwise. I
cleanup
boolean: if the append operation fails or is aborted, should
the intermediate batch created on dataset1 be deleted? Default is
TRUE; FALSE may be useful if you want to review the append
conflicts in the web applicati