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https://issues.apache.org/jira/browse/DRILL-4549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15215109#comment-15215109
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ASF GitHub Bot commented on DRILL-4549:
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GitHub user vkorukanti opened a pull request:
https://github.com/apache/drill/pull/450
DRILL-4549: Add support for more truncation units in date_trunc function
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/vkorukanti/drill DRILL-4549
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/450.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #450
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commit 89fc8462497e162772b56d6d45bca0074fbe3e43
Author: vkorukanti <[email protected]>
Date: 2016-03-28T18:09:34Z
DRILL-4549: Add support for more truncation units in date_trunc function
----
> Add support for more truncation units in date_trunc function
> ------------------------------------------------------------
>
> Key: DRILL-4549
> URL: https://issues.apache.org/jira/browse/DRILL-4549
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.6.0
> Reporter: Venki Korukanti
> Assignee: Venki Korukanti
> Fix For: 1.7.0
>
>
> Currently we support only {{YEAR, MONTH, DAY, HOUR, MINUTE, SECOND}} truncate
> units for types {{TIME, TIMESTAMP and DATE}}. Extend the functions to support
> {{YEAR, MONTH, DAY, HOUR, MINUTE, SECOND, WEEK, QUARTER, DECADE, CENTURY,
> MILLENNIUM}} truncate units for types {{TIME, TIMESTAMP, DATE, INTERVAL DAY,
> INTERVAL YEAR}}.
> Also get rid of the if-and-else (on truncation unit) implementation. Instead
> resolve to a direct function based on the truncation unit in Calcite -> Drill
> (DrillOptiq) expression conversion.
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