[jira] [Work started] (HIVE-19796) Push Down TRUNC Fn to Druid Storage Handler

["slim bouguerra (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-19796?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HIVE-19796 started by slim bouguerra.
---------------------------------------------
> Push Down TRUNC Fn to Druid Storage Handler
> -------------------------------------------
>
>                 Key: HIVE-19796
>                 URL: https://issues.apache.org/jira/browse/HIVE-19796
>             Project: Hive
>          Issue Type: Bug
>          Components: Druid integration
>            Reporter: slim bouguerra
>            Assignee: slim bouguerra
>            Priority: Major
>         Attachments: HIVE-19796.patch
>
>
> Push down Queries with TRUNC date function such as 
> {code}
> SELECT SUM((`ssb_druid_100`.`discounted_price` * `ssb_druid_100`.`net_revenue`)) AS `sum_calculation_4998925219892510720_ok`,
>   CAST(TRUNC(CAST(`ssb_druid_100`.`__time` AS TIMESTAMP),'MM') AS DATE) AS `tmn___time_ok`
> FROM `druid_ssb`.`ssb_druid_100` `ssb_druid_100`
> GROUP BY CAST(TRUNC(CAST(`ssb_druid_100`.`__time` AS TIMESTAMP),'MM') AS DATE)
> {code}



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