[
https://issues.apache.org/jira/browse/TAJO-684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13942662#comment-13942662
]
Hyunsik Choi commented on TAJO-684:
-----------------------------------
Hi [~alvinhenrick],
Welcome to Tajo project. Thank you for your contribution.
In overall, the patch looks nice for me. I have some comments on your patch.
For easy review, could you mind uploading your patch to the review board?
https://reviews.apache.org/dashboard/
> Add functions about time
> ------------------------
>
> Key: TAJO-684
> URL: https://issues.apache.org/jira/browse/TAJO-684
> Project: Tajo
> Issue Type: Task
> Components: function/udf
> Affects Versions: 0.8-incubating, 1.0-incubating
> Reporter: Jihoon Son
> Assignee: Alvin Henrick
> Labels: patch
> Attachments: TAJO-684-With-ASF-Unit-Test.patch,
> TAJO-684-WithUnitTest.patch, TAJO-684.patch
>
>
> Functions about time such as utc_usec_to_second(), utc_usec_to_minute(),
> utc_usec_to_hour(), utc_usec_to_day(), utc_usec_to_week(), utc_usec_to_year()
> are popularly used in many applications.
> These functions are useful when we group data with tome intervals.
> For example, utc_usec_to_day() works as follows.
> {noformat}
> tajo> select utc_usec_to_day(1274259481071200);
> 1274227200000000
> {noformat}
> We need to provide these functions by default.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
