[Parquet] Add projection utility functions #6931
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alamb
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Jan 3, 2025
parquet/src/arrow/mod.rs
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| /// Example: | ||
| /// mask1 = [true, false, true] | ||
| /// mask2 = [false, true, true] | ||
| /// union(mask1, mask2) = [true, true, true] |
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The rendered docs look.a bit off:
I pushed a commit to make them a bit nicer
Suggested change
| /// Example: | |
| /// mask1 = [true, false, true] | |
| /// mask2 = [false, true, true] | |
| /// union(mask1, mask2) = [true, true, true] | |
| /// Example: | |
| /// mask1 = [true, false, true] | |
| /// mask2 = [false, true, true] | |
| /// union(mask1, mask2) = [true, true, true] |
|
Thank you @XiangpengHao and @tustvold |
CurtHagenlocher
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to CurtHagenlocher/arrow-rs
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Jan 13, 2025
* projection utilities * improve docs --------- Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>
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Which issue does this PR close?
Part of #6921
Rationale for this change
To implement row level filtering for Parquet, we need to cache columns that are being filtered, i.e., the column is both in filter's predicate projection and in final output projection.
This PR adds two utility functions to union and interset two projections.
What changes are included in this PR?
Are there any user-facing changes?