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https://issues.apache.org/jira/browse/ARROW-14612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17487305#comment-17487305
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Will Jones commented on ARROW-14612:
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Supporting adding filename as a column may be a decent substitute for this.
> [C++] Support for filename-based partitioning
> ---------------------------------------------
>
> Key: ARROW-14612
> URL: https://issues.apache.org/jira/browse/ARROW-14612
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Nicola Crane
> Priority: Major
> Labels: dataset, good-second-issue
>
> Directory-based partitioning is a feature of Arrow, but could we support
> filename-based partitioning?
> e.g. I have a series of CSV files here all called something like
> {{foo_month_year.csv}} and it'd be nice to be able to read them in and then
> the month/year bits of the filenames then appear as fields I can filter on
> etc.
>
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