[ https://issues.apache.org/jira/browse/ARROW-15822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ben Harkins reassigned ARROW-15822: ----------------------------------- Assignee: Ben Harkins > [C++] Cast duration to string (thus CSV writing) not supported > -------------------------------------------------------------- > > Key: ARROW-15822 > URL: https://issues.apache.org/jira/browse/ARROW-15822 > Project: Apache Arrow > Issue Type: Bug > Components: C++, R > Affects Versions: 7.0.0, 7.0.2 > Reporter: Carl Boettiger > Assignee: Ben Harkins > Priority: Critical > > Edit (Dragos Moldovan-Grünfeld): The issue I opened (ARROW-15833) is > basically a duplicate of this. It's fundamentally a C++ issue that happened > to surface in the R CSV writer. I hope you don't mind, I modified the > components to C++ > =================== > Consider this reprex: > {code:java} > arrow::write_csv_arrow(data.frame(time = as.difftime(1, units="secs")), > "test.csv"){code} > This errors with: > Error: NotImplemented: Unsupported cast from duration[s] to utf8 using > function cast_string > > Note that readr::write_csv() has no trouble with this (which renders the data > as "1" without a unit). Arguably the readr rendering is lossy, but then we > usually assume units are provided in other metadata anyway. -- This message was sent by Atlassian Jira (v8.20.10#820010)