Add ignore leading and trailing white space to csv parser #8960
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xanderbailey
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Dec 5, 2025
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| if self.ignore_leading_whitespace { | ||
| trimmed = trimmed.trim_start(); | ||
| } | ||
| if self.ignore_trailing_whitespace { | ||
| trimmed = trimmed.trim_end(); | ||
| } |
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Very open to suggestions if this is the right way to go about this. It looks like the other options are passed into FormatOptions but that's used much more widely than just the CSV reader...
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Which issue does this PR close?
We generally require a GitHub issue to be filed for all bug fixes and enhancements and this helps us generate change logs for our releases. You can link an issue to this PR using the GitHub syntax.
ignoreLeadingWhiteSpaceandignoreTrailingWhiteSpaceoptions to the csv writer #8961Rationale for this change
Spark's csv writer can do this and it would be nice to have feature parity in projects like datafusion.
Why are you proposing this change? If this is already explained clearly in the issue then this section is not needed.
Explaining clearly why changes are proposed helps reviewers understand your changes and offer better suggestions for fixes.
What changes are included in this PR?
Adds two new options for
ignore_leading_whitespaceandignore_trailing_whitespaceto csv writer.There is no need to duplicate the description in the issue here but it is sometimes worth providing a summary of the individual changes in this PR.
Are these changes tested?
Yes
We typically require tests for all PRs in order to:
If tests are not included in your PR, please explain why (for example, are they covered by existing tests)?
Are there any user-facing changes?
If there are user-facing changes then we may require documentation to be updated before approving the PR.
If there are any breaking changes to public APIs, please call them out.