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Subject [GitHub] [incubator-hivemall] myui opened a new pull request #226: [HIVEMALL-291] Support deduplication in to_order_list UDAF
Date Thu, 23 Jan 2020 09:19:21 GMT
myui opened a new pull request #226: [HIVEMALL-291] Support deduplication in to_order_list
UDAF
URL: https://github.com/apache/incubator-hivemall/pull/226
 
 
   ## What changes were proposed in this pull request?
   
   Add -dedup option to to_ordered_list.
   
   ## What type of PR is it?
   
   Improvement
   
   ## What is the Jira issue?
   
   https://issues.apache.org/jira/browse/HIVEMALL-291
   
   ## How was this patch tested?
   
   manual tests on EMR
   
   ## How to use this feature?
   
   ```sql
   select 
     to_ordered_list(value, key, '-dedup -vk_map')
   from
     data
   ```
   
   ## Checklist
   
   - [x] Did you apply source code formatter, i.e., `./bin/format_code.sh`, for your commit?
   - [ ] Did you run system tests on Hive (or Spark)?
   

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