[jira] [Updated] (FLINK-26944) Add ADD_MONTHS supported in SQL and Table API

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-26944?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-26944:
-----------------------------------
    Labels: pull-request-available  (was: )

> Add ADD_MONTHS supported in SQL and Table API
> ---------------------------------------------
>
>                 Key: FLINK-26944
>                 URL: https://issues.apache.org/jira/browse/FLINK-26944
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / API
>            Reporter: dalongliu
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.16.0
>
>
> Returns the date that is {{numMonths}} after {{{}startDate{}}}.
> Syntax:
> {code:java}
> add_months(startDate, numMonths) {code}
> Arguments:
>  * {{{}startDate{}}}: A DATE expression.
>  * {{{}numMonths{}}}: An integral number.
> Returns:
> A DATE. If the result exceeds the number of days of the month the result is rounded down to the end of the month. If the result exceeds the supported range for a date an overflow error is reported.
> Examples:
> {code:java}
> > SELECT add_months('2016-08-31', 1);
>  2016-09-30
> > SELECT add_months('2016-08-31', -6);
>  2016-02-29 {code}
> See more:
>  * [Spark|https://spark.apache.org/docs/latest/sql-ref-functions-builtin.html#date-and-timestamp-functions]
>  * [Hive|https://cwiki.apache.org/confluence/display/hive/languagemanual+udf]



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