[GitHub] [arrow-datafusion] Ted-Jiang opened a new issue #2009: Creating the supported unary/binary expressions using Vec as params

[GitBox <gi...@apache.org>]

Ted-Jiang opened a new issue #2009:
URL: https://github.com/apache/arrow-datafusion/issues/2009


   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**`
   Add support for #2007 
   ```
                      // ScalarFunction::Rpad => Ok(rpad(vec![])),
                       // ScalarFunction::RegexpReplace => {
                       //     Ok(regexp_replace(vec![]))
                       // }
                       // ScalarFunction::RegexpMatch => {
                       //     Ok(regexp_match(vec![]))
                       // }
                       // ScalarFunction::Lpad => Ok(lpad(vec![])),
                       //ScalarFunction::Btrim => Ok(btrim((&args[0]).try_into()?))
   ```
   
   
   **Describe the solution you'd like**
   
   **Describe alternatives you've considered**
   A clear and concise description of any alternative solutions or features you've considered.
   
   **Additional context**
   try to use
   ```
   error[E0277]: the trait bound `Vec<Expr>: From<&[LogicalExprNode]>` is not satisfied
       --> datafusion-proto/src/from_proto.rs:1077:67
        |
   1077 |                     ScalarFunction::Btrim => Ok(btrim((&args[..]).try_into()?)),
        |                                                                   ^^^^^^^^ the trait `From<&[LogicalExprNode]>` is not implemented for `Vec<Expr>`
        |
        = help: the following implementations were found:
                  <Vec<T, A> as From<Box<[T], A>>>
                  <Vec<T, A> as From<VecDeque<T, A>>>
                  <Vec<T> as From<&[T]>>
                  <Vec<T> as From<&mut [T]>>
                and 7 others
        = note: required because of the requirements on the impl of `Into<Vec<Expr>>` for `&[LogicalExprNode]`
        = note: required because of the requirements on the impl of `TryFrom<&[LogicalExprNode]>` for `Vec<Expr>`
        = note: required because of the requirements on the impl of `TryInto<Vec<Expr>>` for `&[LogicalExprNode]`
   
   For more information about this error, try `rustc --explain E0277`.
   ```
   


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[GitHub] [arrow-datafusion] Ted-Jiang closed issue #2009: Creating the supported unary/binary expressions using Vec as params

[GitBox <gi...@apache.org>]

Ted-Jiang closed issue #2009:
URL: https://github.com/apache/arrow-datafusion/issues/2009


   


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