Re: [PR] HIVE-29323: st_convexhull shouldn't return multipolygon [hive]

Wed, 19 Nov 2025 06:20:32 -0800 


abstractdog commented on PR #6201:
URL: https://github.com/apache/hive/pull/6201#issuecomment-3552964702

   > Not great with Maths, I think I bunked those classes when in school :-)
   > 
   > @abstractdog not mine but from chatgpt <img alt="image" width="844" 
height="746" 
src="https://private-user-images.githubusercontent.com/25608848/516297038-adba3423-352c-474d-83a8-d288c50577b6.png?jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NjM1NjE4NzcsIm5iZiI6MTc2MzU2MTU3NywicGF0aCI6Ii8yNTYwODg0OC81MTYyOTcwMzgtYWRiYTM0MjMtMzUyYy00NzRkLTgzYTgtZDI4OGM1MDU3N2I2LnBuZz9YLUFtei1BbGdvcml0aG09QVdTNC1ITUFDLVNIQTI1NiZYLUFtei1DcmVkZW50aWFsPUFLSUFWQ09EWUxTQTUzUFFLNFpBJTJGMjAyNTExMTklMkZ1cy1lYXN0LTElMkZzMyUyRmF3czRfcmVxdWVzdCZYLUFtei1EYXRlPTIwMjUxMTE5VDE0MTI1N1omWC1BbXotRXhwaXJlcz0zMDAmWC1BbXotU2lnbmF0dXJlPTViODA5NzFiOGI2NDdiMWI1YzI3Nzg3OWMxNTExM2MwN2Q4N2JlZmRlOWJjMzQ2ZmRlNTBiNDZhNzExYTkzODkmWC1BbXotU2lnbmVkSGVhZGVycz1ob3N0In0.bbf-A97m6DJOd8XxhwajXhx_lmICSVbaENSStie2syc";>
   > 
   > Does that work or do you want me to add/change something which maybe I 
didn't understood
   
   makes sense, what I meant is rather like checking these with qtest maybe:
   
   1. identical points:
   ```
   select ST_AsText(ST_ConvexHull(ST_GeomFromText('multipoint ((2 0), (2, 
0))')))
   ```
   
   2. single point
   select ST_AsText(ST_ConvexHull(ST_GeomFromText('multipoint ((2 0))')))
   
   3. collinear points
   select ST_AsText(ST_ConvexHull(ST_GeomFromText('multipoint ((0 0), (1, 1), 
(2, 2))')))


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