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https://issues.apache.org/jira/browse/DRILL-7343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16922585#comment-16922585
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ASF GitHub Bot commented on DRILL-7343:
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KazydubB commented on issue #1840: DRILL-7343: Add User-Agent UDFs to Drill
URL: https://github.com/apache/drill/pull/1840#issuecomment-527940960
@cgivre I agree that having two functions for `OPTIONAL` and `REQUIRED`
cases is not the best experience, but returning an empty list on `NULL` is not
enough, because there may be functions that will need to return a `MAP` for
example. So, there's a need to provide `NullHandling` for `NULL` input for
other cases too (`EMPTY_LIST_IF_NULL`, `EMPTY_MAP_IF_NULL` etc.).
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> Add User-Agent UDFs to Drill
> ----------------------------
>
> Key: DRILL-7343
> URL: https://issues.apache.org/jira/browse/DRILL-7343
> Project: Apache Drill
> Issue Type: New Feature
> Affects Versions: 1.17.0
> Reporter: Charles Givre
> Assignee: Charles Givre
> Priority: Major
> Fix For: 1.17.0
>
>
> This collection of UDFs adds the ability to parse user agent strings which is
> useful for security data analysis.
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