[jira] [Comment Edited] (DRILL-7077) Add Function to Facilitate Time Series Analysis

["Volodymyr Vysotskyi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-7077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16806450#comment-16806450 ] 

Volodymyr Vysotskyi edited comment on DRILL-7077 at 4/1/19 6:39 AM:
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Merged with commit id 3c798d338f4f4dab6713956e0a94d18e6e5c72bd


was (Author: vvysotskyi):
Merged with commit 3c798d338f4f4dab6713956e0a94d18e6e5c72bd

> Add Function to Facilitate Time Series Analysis
> -----------------------------------------------
>
>                 Key: DRILL-7077
>                 URL: https://issues.apache.org/jira/browse/DRILL-7077
>             Project: Apache Drill
>          Issue Type: New Feature
>            Reporter: Charles Givre
>            Assignee: Charles Givre
>            Priority: Major
>              Labels: doc-impacting, ready-to-commit
>             Fix For: 1.16.0
>
>
> When analyzing time based data, you will often have to aggregate by time grains. While some time grains will be easy to calculate, others, such as quarter, can be quite difficult. These functions enable a user to quickly and easily aggregate data by various units of time. Usage is as follows:
> {code:java}
> SELECT <fields>
> FROM <data>
> GROUP BY nearestDate(<timestamp_column>, <time increment>{code}
> So let's say that a user wanted to count the number of hits on a web server per 15 minute, the query might look like this:
> {code:java}
> SELECT nearestDate(`eventDate`, '15MINUTE' ) AS eventDate,
> COUNT(*) AS hitCount
> FROM dfs.`log.httpd`
> GROUP BY nearestDate(`eventDate`, '15MINUTE'){code}
> Currently supports the following time units:
>  * YEAR
>  * QUARTER
>  * MONTH
>  * WEEK_SUNDAY
>  * WEEK_MONDAY
>  * DAY
>  * HOUR
>  * HALF_HOUR / 30MIN
>  * QUARTER_HOUR / 15MIN
>  * MINUTE
>  * 30SECOND
>  * 15SECOND
>  * SECOND
>  
>  



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