[jira] [Commented] (FLINK-9432) Support extract epoch, decade, millisecond, microsecond

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

    [ https://issues.apache.org/jira/browse/FLINK-9432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16592864#comment-16592864 ] 

ASF GitHub Bot commented on FLINK-9432:
---------------------------------------

snuyanzin opened a new pull request #6614: [FLINK-9432] Support extract timeunit: DECADE, EPOCH, ISODOW, ISOYEAR…
URL: https://github.com/apache/flink/pull/6614
 
 
   ## What is the purpose of the change
   The PR provides implementation of `extract` function for timeunits: `decade`, `epoch`, `isodow`, `isoyear`, 'millisecond`,`microsecond`
   
   ## Brief change log
   
   - support timeunits `extract`
   - documentation updates (mention all possible timeunits for `extract`)
   - tests
   
   ## Verifying this change
     - *Added tests validates the result of `extract` call*
     - *Added tests validates that `extract` of `isodow`, `isodoy`, `epoch`, `decade` for time is incorrect*
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (no)
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no)
     - The serializers: (no)
     - The runtime per-record code paths (performance sensitive): (no)
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
     - The S3 file system connector: (no)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (yes)
     - If yes, how is the feature documented? (docs)
       functions.md updated
   

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> Support extract epoch, decade, millisecond, microsecond
> -------------------------------------------------------
>
>                 Key: FLINK-9432
>                 URL: https://issues.apache.org/jira/browse/FLINK-9432
>             Project: Flink
>          Issue Type: New Feature
>            Reporter: Sergey Nuyanzin
>            Assignee: Sergey Nuyanzin
>            Priority: Major
>              Labels: pull-request-available
>
> The task is to separate activity from depending on https://issues.apache.org/jira/browse/CALCITE-2303 from all others that could be done without upgrade avatica/calcite in  https://issues.apache.org/jira/browse/FLINK-8518
> Now the implementations of next functions are blocked
> {code:sql}
> extract(decade from ...)
> extract(epoch from ...)
> extract(millisecond from ...)
> extract(microsecond from ...)
> extract(isodow from ...)
> extract(isoyear from ...)
> {code}



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