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Posted to github@arrow.apache.org by "alamb (via GitHub)" <gi...@apache.org> on 2025/11/06 21:02:26 UTC
[I] [Parquet] virtual row group number support [arrow-rs]
alamb opened a new issue, #8800:
URL: https://github.com/apache/arrow-rs/issues/8800
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
- Similarly to https://github.com/apache/arrow-rs/issues/7299 there may be times when it is useful to know the row group number for each row (to compute per-row group statistics, for example)
**Describe the solution you'd like**
Consider adding a `_row_group` column, similar to adding the file row number described in
- https://github.com/apache/arrow-rs/issues/7299
**Describe alternatives you've considered**
**Additional context**
I vaguely remember someone asked me about this (maybe @adriangb )
With the advent of https://github.com/apache/arrow-rs/issues/7299 from @vustef, I wanted to document the other usecases for virtual columns
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Re: [I] [Parquet] virtual row group number support [arrow-rs]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb closed issue #8800: [Parquet] virtual row group number support
URL: https://github.com/apache/arrow-rs/issues/8800
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Re: [I] [Parquet] virtual row group number support [arrow-rs]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb closed issue #8800: [Parquet] virtual row group number support
URL: https://github.com/apache/arrow-rs/issues/8800
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Re: [I] [Parquet] virtual row group number support [arrow-rs]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on issue #8800:
URL: https://github.com/apache/arrow-rs/issues/8800#issuecomment-3499401200
Dupe of https://github.com/apache/arrow-rs/issues/8641
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