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Posted to github@arrow.apache.org by "izveigor (via GitHub)" <gi...@apache.org> on 2023/04/03 08:33:01 UTC

[GitHub] [arrow-datafusion] izveigor opened a new issue, #5838: Additional math functions

izveigor opened a new issue, #5838:
URL: https://github.com/apache/arrow-datafusion/issues/5838

   ### Is your feature request related to a problem or challenge?
   
   Arrow-DataFusion at this stage has few mathematical expressions and operations. In this issue I describe possible futures features about the problem.
   
   Most significant features:
   - [ ] Cbrt (Support: PostgreSQL, Rust, Numpy)
   - [ ] Mathematical constant Pi (3,1415..) (Support: PostgreSQL, Rust, Numpy, MySQL)
   - [ ] Factorial (Support: PostgreSQL, Rust, Numpy)
   - [ ] Hyperbolic functions (Support: PostgreSQL, Rust, Numpy)
   - [ ] Degrees, Radians (Support: PostgreSQL, Numpy, Rust, MySQL)
   
   Least Significant features:
   - [ ] GCD and LCM (Numpy)
   - [ ] Support radian/degree trigonometric functions (Like PostgreSQL COS/COSD) (Support: PostgreSQL)
   
   ### Describe the solution you'd like
   
   Series of PR, active discussion of features.
   
   ### Describe alternatives you've considered
   
   The significance of some features can be disproven as a result of conversations.
   
   ### Additional context
   
   Sources:
   - PostgreSQL math functions: https://www.postgresql.org/docs/current/functions-math.html
   - MySQL math functions: https://dev.mysql.com/doc/refman/8.0/en/mathematical-functions.html
   - Rust f64 in-built functions: https://doc.rust-lang.org/std/primitive.f64.html
   - Numpy (using with Pandas) math functions: https://numpy.org/doc/stable/reference/routines.math.html


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[GitHub] [arrow-datafusion] waynexia commented on issue #5838: Additional math functions

Posted by "waynexia (via GitHub)" <gi...@apache.org>.
waynexia commented on issue #5838:
URL: https://github.com/apache/arrow-datafusion/issues/5838#issuecomment-1503007620

   FYI: it also helps to integrate PromQL's [function](https://prometheus.io/docs/prometheus/latest/querying/functions/#trigonometric-functions), thanks for this 👍 


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[GitHub] [arrow-datafusion] mingmwang commented on issue #5838: Additional math functions

Posted by "mingmwang (via GitHub)" <gi...@apache.org>.
mingmwang commented on issue #5838:
URL: https://github.com/apache/arrow-datafusion/issues/5838#issuecomment-1494458875

   👍


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[GitHub] [arrow-datafusion] alamb closed issue #5838: Additional math functions

Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb closed issue #5838: Additional math functions
URL: https://github.com/apache/arrow-datafusion/issues/5838


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