alamb opened a new issue, #3268: URL: https://github.com/apache/arrow-rs/issues/3268
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** I am working on sqllogictest based testing in DataFusion - https://github.com/apache/arrow-datafusion/issues/4460 We are using the Arrow CSV writer 👍 However, in order to implement the spec correctly, we need to display NULLs as "NULL" Currently the CSV writer writes out NULLs as empty strings `""` I would like a way to control what string was used. **Describe the solution you'd like** Extend https://docs.rs/arrow-csv/28.0.0/arrow_csv/writer/struct.WriterBuilder.html ```rust let builder = WriterBuilder::new() .has_headers(false) .with_delimiter(b' ') // new setting to control NULL output .with_null(b'NULL'); ``` So instead of wrting out the values `A, null, B' as ```text A B ``` As is done today this would be written like ```text A NULL B ``` **Describe alternatives you've considered** <!-- A clear and concise description of any alternative solutions or features you've considered. --> **Additional context** https://github.com/apache/arrow-datafusion/issues/4500 -- 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]
