westonpace commented on issue #35604: URL: https://github.com/apache/arrow/issues/35604#issuecomment-1553008818
The schema in `open_dataset` is not a tool for introducing mutations on the columns. It can be used to reduce the number of columns you load, or I believe you can include additional columns (to get null values), but you should not be changing the type of existing columns. I think you will want to use dplyr's mutate and the `make_struct` function (I'm not sure what the R bindings look like for this function). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
