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https://issues.apache.org/jira/browse/DRILL-7343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16922580#comment-16922580
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ASF GitHub Bot commented on DRILL-7343:
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cgivre commented on issue #1840: DRILL-7343: Add User-Agent UDFs to Drill
URL: https://github.com/apache/drill/pull/1840#issuecomment-527935677
@KazydubB
What happens in the `parse_query` function is that there is a duplicate
function of the same name which allows null input which returns an empty list.
I had tried this before, but apparently didn't use the correct parameters so it
didn't work for me, BUT, now it does so yay!
In any event, this seems like horrible design. I'm going to open a JIRA to
create a new function handler which returns an empty list on null. That seems
like a better approach than having to write 2 UDFS for every UDF with a complex
writer output.
I also added a series of unit tests to test this functionality.
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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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