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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2017/07/07 02:17:00 UTC

[jira] [Commented] (FLINK-6811) Add TIMESTAMPADD supported in SQL

    [ https://issues.apache.org/jira/browse/FLINK-6811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16077474#comment-16077474 ] 

ASF GitHub Bot commented on FLINK-6811:
---------------------------------------

Github user sunjincheng121 commented on the issue:

    https://github.com/apache/flink/pull/4076
  
    I have rebase the code and update the PR.


> Add TIMESTAMPADD supported in SQL
> ---------------------------------
>
>                 Key: FLINK-6811
>                 URL: https://issues.apache.org/jira/browse/FLINK-6811
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API & SQL
>            Reporter: sunjincheng
>            Assignee: sunjincheng
>
> TIMESTAMPADD(unit,interval,datetime_expr) Adds the integer expression interval to the date or datetime expression datetime_expr. The unit for interval is given by the unit argument, which should be one of the following values: MICROSECOND (microseconds), SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, or YEAR.
> * Syntax:
> TIMESTAMPADD(unit,interval,datetime_expr)
> * Arguments
> **unit: -
> **interval: -
> **datetime_expr: -
> * Return Types
>   DATAETIME/DATE/TIME
> * Example:
>   SELECT TIMESTAMPADD(month, 1, '2017-05-31') --> '2017-06-30 00:00:00.000'
>   SELECT TIMESTAMPADD(WEEK,1,'2003-01-02') -> '2003-01-09'
> * See more:
> ** [MySQL| https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_timestampadd]
> Note: Due to the difference of [[org.apache.calcite.rex.Rex Literal]] between calcite 1.12 and calcite master we should temp close support the construce of {{TIMESTAMPADD(SqlTypeFamily.ANY, SqlTypeFamily.INTEGER, SqlTypeFamily.DATE)}}, until upgrade to calcite 1.13.
> See more: 
> https://issues.apache.org/jira/browse/CALCITE-1639
> https://issues.apache.org/jira/browse/FLINK-6851
> See more: [https://issues.apache.org/jira/browse/CALCITE-1827|https://issues.apache.org/jira/browse/CALCITE-1827]



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