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https://issues.apache.org/jira/browse/ARROW-316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928667#comment-15928667
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Wes McKinney commented on ARROW-316:
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In the interest of an expedient resolution, I opened PR
https://github.com/apache/arrow/pull/390 for discussion.
As an extra data point, the {{DateUnit::DAY}} 32-bit representation is the one
used by PostgreSQL.
> Finalize Date type
> ------------------
>
> Key: ARROW-316
> URL: https://issues.apache.org/jira/browse/ARROW-316
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Format
> Reporter: Julien Le Dem
> Assignee: Julien Le Dem
> Fix For: 0.3.0
>
>
> Parquet defines it as: "number of days from the Unix epoch, 1 January 1970."
> https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#datetime-types
> We should make it the same.
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