[jira] [Resolved] (SPARK-29371) Support interval field values with fractional parts

["Sean R. Owen (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-29371?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean R. Owen resolved SPARK-29371.
----------------------------------
    Resolution: Won't Fix

> Support interval field values with fractional parts
> ---------------------------------------------------
>
>                 Key: SPARK-29371
>                 URL: https://issues.apache.org/jira/browse/SPARK-29371
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Maxim Gekk
>            Priority: Major
>
> In PostgreSQL, field values can have fractional parts; for example '1.5 week' or '01:02:03.45'. Such input is converted to the appropriate number of months, days, and seconds for storage. When this would result in a fractional number of months or days, the fraction is added to the lower-order fields using the conversion factors 1 month = 30 days and 1 day = 24 hours. For example, '1.5 month' becomes 1 month and 15 days. Only seconds will ever be shown as fractional on output. See https://www.postgresql.org/docs/current/datatype-datetime.html#DATATYPE-INTERVAL-INPUT
> For example:
> {code}
> maxim=# SELECT INTERVAL '1.5 months' AS "One month 15 days";
>  One month 15 days 
> -------------------
>  1 mon 15 days
> (1 row)
> {code}



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