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From "Alexander Pivovarov (JIRA)" <>
Subject [jira] [Updated] (HIVE-9518) Implement MONTHS_BETWEEN aligned with Oracle one
Date Wed, 25 Mar 2015 18:21:54 GMT


Alexander Pivovarov updated HIVE-9518:
    Component/s: UDF

> Implement MONTHS_BETWEEN aligned with Oracle one
> ------------------------------------------------
>                 Key: HIVE-9518
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: UDF
>            Reporter: Xiaobing Zhou
>            Assignee: Alexander Pivovarov
>         Attachments: HIVE-9518.1.patch, HIVE-9518.2.patch, HIVE-9518.3.patch, HIVE-9518.4.patch,
> This is used to track work to build Oracle like months_between. Here's semantics:
> MONTHS_BETWEEN returns number of months between dates date1 and date2. If date1 is later
than date2, then the result is positive. If date1 is earlier than date2, then the result is
negative. If date1 and date2 are either the same days of the month or both last days of months,
then the result is always an integer. Otherwise Oracle Database calculates the fractional
portion of the result based on a 31-day month and considers the difference in time components
date1 and date2.

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