lidavidm edited a comment on pull request #10520: URL: https://github.com/apache/arrow/pull/10520#issuecomment-861035926
The null handling behavior never affects the separator: it only describes how to handle the other values. It's intended to let you mimic libcudf. ``` binary_join_element_wise(['a', 'b', 'c', 'h'], ['d', null, 'e', 'i'], ['f', 'g', null, 'j'], [';', '-', ',', null]) EMIT_NULL: ['a', null, null, null] SKIP: ['a;d;f', 'b-g', 'c,e', null] # b and g are joined; the middle null value is ignored REPLACE(replacement=foo): ['a;d;f', 'b-foo-g', 'c,e,foo', null] ``` If this makes sense, I'll try to update the docs to be clearer. -- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
