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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-6895) Add STR_TO_DATE supported in SQL
Date Sat, 03 Mar 2018 07:03:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-6895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16384528#comment-16384528

ASF GitHub Bot commented on FLINK-6895:

GitHub user buptljy opened a pull request:


    [FLINK-6895][table]Add STR_TO_DATE supported in SQL

    ## What is the purpose of the change
    Add STR_TO_DATE Function supported in SQL
    ## Brief change log
     * STR_TO_DATE(str string, format string)  
        \-  str is the string that need to be transformed.
        \- format is the pattern of "str"
     * Add tests in ScalarFunctionsTest.scala
     * Add docs in sql.md
    ## Verifying this change
     * Run unit tests in  ScalarFunctionsTest.scala
    ## Does this pull request potentially affect one of the following parts:
     * A new sql function
    ## Documentation
      * Add docs in sql.md

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/buptljy/flink str_to_date2

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #5628
commit 4650f5ba5314bc65ded5134a1f76d457455b75d5
Author: Liao Jiayi <liaojiayi@...>
Date:   2018-03-03T07:00:13Z

    add str_to_date sql function

commit 9cfa5245d88dcd08763c3fb7588382a969906412
Author: Liao Jiayi <liaojiayi@...>
Date:   2018-03-03T07:00:32Z

    Merge branch 'master' of github.com:apache/flink into str_to_date2


> Add STR_TO_DATE supported in SQL
> --------------------------------
>                 Key: FLINK-6895
>                 URL: https://issues.apache.org/jira/browse/FLINK-6895
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API &amp; SQL
>    Affects Versions: 1.4.0
>            Reporter: sunjincheng
>            Assignee: Aegeaner
>            Priority: Major
> STR_TO_DATE(str,format) This is the inverse of the DATE_FORMAT() function. It takes a
string str and a format string format. STR_TO_DATE() returns a DATETIME value if the format
string contains both date and time parts, or a DATE or TIME value if the string contains only
date or time parts. If the date, time, or datetime value extracted from str is illegal, STR_TO_DATE()
returns NULL and produces a warning.
> * Syntax:
> STR_TO_DATE(str,format) 
> * Arguments
> **str: -
> **format: -
> * Return Types
> * Example:
>   STR_TO_DATE('01,5,2013','%d,%m,%Y') -> '2013-05-01'
>   SELECT STR_TO_DATE('a09:30:17','a%h:%i:%s') -> '09:30:17'
> * See more:
> ** [MySQL| https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_str-to-date]

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