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https://issues.apache.org/jira/browse/ARROW-9501?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neal Richardson reassigned ARROW-9501:
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Assignee: Sagnik Chakraborty
> [C++][Gandiva] Add logic in timestampdiff() when end date is last day of a
> month
> --------------------------------------------------------------------------------
>
> Key: ARROW-9501
> URL: https://issues.apache.org/jira/browse/ARROW-9501
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++ - Gandiva
> Reporter: Sagnik Chakraborty
> Assignee: Sagnik Chakraborty
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> {{timestampdiff}}(*month*, _startDate_, _endDate_) returns wrong result in
> Gandiva when the _endDate_ < _startDate_ and _endDate_ is the last day of the
> month. An additional month is said to have passed when the end day is greater
> than or equal to the start day, but this does not hold true for dates which
> are last days of the month.
> Case in point, if _startDate_ = *2020-01-31*, _endDate_ = *2020-02-29*,
> previously {{timestampdiff}}() returned *0*, but the correct result should be
> *1*.
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