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From "ASF GitHub Bot (Jira)" <>
Subject [jira] [Commented] (KYLIN-4314) Support union in intersect_count() function
Date Tue, 09 Jun 2020 16:31:00 GMT


ASF GitHub Bot commented on KYLIN-4314:

zhangayqian edited a comment on pull request #1088:

   ### Check list
   - [ ] Step 1. [**OPTIONAL**]Understand background/root cause/design basically(one hour
EST) . Its issue type is 
       - [ ] bug fix
       - [x] new feature
       - [ ] enhancement
   - [x] Step 2. Test cases are designed and documented (30 minutes EST).
   - [x] Step 3. Prepare specific env, for example:
       - mock data (maybe some specific data type)
       - test env (maybe install a RDBMS instance).
   - [x] Step 4. Verify and make sure test cases passed.
   - [x] Step 5. Paste manual important steps and screenshots here (20 minutes EST). 
       - If you find difficulty in pick most important evidence, please attach diagnosis package.

   - [x] Step 6. Do more check in user perspective (20 minutes EST)
       - [x] Doc need be updated? And if it is updated? Ask help for release manager if so.
       - [ ] If it is a breaking change so we should notify Kylin community? Ask help for
release manager if so.
   - [x] Step 7.  Summarize this test (20 minutes EST).
   ### Total estimate
   - 4 hours for small issue from optimistic estimate. 
   ### Note
   If you find some unexpected and **unrelated** error/mistake, please DO report it if it
is truly a mistake, I think we may research and fix it in the future.
   If you find background information/root cause analysis is not complete or ambiguous, please
try to contact to author or do a quick research and record what you find. It is a good chance
to learn something interesting.
   If you find it is not easy to design testcase, please notify release manager.

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> Support union in intersect_count() function
> -------------------------------------------
>                 Key: KYLIN-4314
>                 URL:
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Query Engine
>            Reporter: Shao Feng Shi
>            Assignee: Shao Feng Shi
>            Priority: Minor
>             Fix For: v3.1.0, v2.6.6
> The current version of "intersect_count" only support "intersect" operation. While in
some cases, we may union some collections(bitmaps) first, and then intersect with other collections.
For example:
> intersect_count(user_id, page_id, array['search', 'view', 'order']);
> -- this calculation how many users did "search", and then "view", and then make the "order".
> intersect_count(user_id, page_id, array['search|view', 'order']);
> -- this calculation how many users did "search" or "view" (any of them) , and then make
the "order".

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