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Posted to notifications@superset.apache.org by GitBox <gi...@apache.org> on 2019/12/03 01:27:54 UTC

[GitHub] [incubator-superset] suddjian opened a new pull request #8723: Handle null values in bar charts

suddjian opened a new pull request #8723: Handle null values in bar charts
URL: https://github.com/apache/incubator-superset/pull/8723
 
 
   ### CATEGORY
   
   - [x] Bug Fix
   - [ ] Enhancement (new features, refinement)
   - [ ] Refactor
   - [ ] Add tests
   - [ ] Build / Development Environment
   - [ ] Documentation
   
   ### SUMMARY
   <!--- Describe the change below, including rationale and design decisions -->
   
   pandas removes `None` values when doing a groupby or a pivot, so we have to substitute a value for `None`s beforehand. There is already a value `"<NULL>"` being used in a few places, so I used that and centralized it in a new `constants.py` file.
   
   Fixes #8672 
   
   ### BEFORE/AFTER SCREENSHOTS
   <!--- Skip this if not applicable -->
   
   Before:
   
   <img width="1065" alt="Screen Shot 2019-12-02 at 5 18 33 PM" src="https://user-images.githubusercontent.com/1858430/70012230-b3583900-1528-11ea-8119-e8f9472bde8e.png">
   
   After:
   
   <img width="1064" alt="Screen Shot 2019-12-02 at 5 18 03 PM" src="https://user-images.githubusercontent.com/1858430/70012232-b521fc80-1528-11ea-8cf0-5edd4858bc6f.png">
   
   
   ### TEST PLAN
   <!--- What steps should be taken to verify the changes -->
   
   `<NULL>`
   
   ### ADDITIONAL INFORMATION
   <!--- Check any relevant boxes with "x" -->
   <!--- HINT: Include "Fixes #nnn" if you are fixing an existing issue -->
   - [ ] Has associated issue:
   - [ ] Changes UI
   - [ ] Requires DB Migration.
   - [ ] Confirm DB Migration upgrade and downgrade tested.
   - [ ] Introduces new feature or API
   - [ ] Removes existing feature or API
   
   ### REVIEWERS
   

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