Crunch datasets can be saved and restored using saveVersion and restoreVersion().
Some Crunch functions, such as appendDataset() create new savepoints automatically. To
see the list of savepoints use versions().
saveVersion(
dataset,
description = paste("Version", length(versions(dataset)) + 1)
)invisibly, the URL of the newly created version
a CrunchDataset
character name to give the saved version, as in a commit message. You are encouraged, though not strictly required, to give versions unique descriptions.
versions restoreVersion