apache / apache/arrow-dotnet

Improve performance of column lookup by name

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C#
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1d 9h
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Description

### Describe the enhancement requested

The `Column(string)` method in `RecordBatch` is linear to the number of columns. This could be improved by adding an optional dictionary-based lookup.

Moved from [https://github.com/apache/arrow/issues/44501](https://github.com/apache/arrow/issues/44501). See extensive discussion at [https://github.com/apache/arrow/pull/44633](https://github.com/apache/arrow/pull/44633).

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