[GitHub] [arrow-datafusion] xudong963 commented on pull request #2177: udtf support

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

xudong963 commented on PR #2177:
URL: https://github.com/apache/arrow-datafusion/pull/2177#issuecomment-1093964538

   BTW, from clippy:
   ```
   error: unneeded `return` statement
      --> datafusion/core/src/physical_plan/functions.rs:752:9
       |
   752 |         return Ok(ColumnarValue::Array(result));
       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return`: `Ok(ColumnarValue::Array(result))`
       |
       = note: `-D clippy::needless-return` implied by `-D warnings`
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
   
   error: could not compile `datafusion` due to previous error
   warning: build failed, waiting for other jobs to finish...
   error: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
       --> datafusion/core/src/execution/context.rs:3527:32
        |
   3527 |             let start_number = start_arr.into_iter().nth(0).unwrap().unwrap_or(0);
        |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `start_arr.into_iter().next()`
        |
        = note: `-D clippy::iter-nth-zero` implied by `-D warnings`
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
   
   error: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
       --> datafusion/core/src/execution/context.rs:3533:30
        |
   3533 |             let end_number = end_arr.into_iter().nth(0).unwrap().unwrap_or(0) + 1;
        |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `end_arr.into_iter().next()`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
   
   error: build failed
   ```


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