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Support casting to/from DictionaryArray <--> LargeUTF8, Binary and LargeBinary in Cast Kernels #1179

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tustvold opened this issue Jan 14, 2022 · 1 comment · Fixed by #3542
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Support casting to/from DictionaryArray <--> LargeUTF8, Binary and LargeBinary in Cast Kernels #1179

tustvold opened this issue Jan 14, 2022 · 1 comment · Fixed by #3542
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arrow Changes to the arrow crate enhancement Any new improvement worthy of a entry in the changelog good first issue Good for newcomers help wanted

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@tustvold
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Is your feature request related to a problem or challenge? Please describe what you are trying to do.

Currently if you try to cast a LargeStringArray, BinaryArray or LargeBinaryArray into a dictionary an error is returned

For example

CastError("Unsupported output type for dictionary packing: LargeUtf8")'

Describe the solution you'd like

Ideally this would work
@tustvold tustvold added the enhancement Any new improvement worthy of a entry in the changelog label Jan 14, 2022
@alamb alamb changed the title Support LargeUTF8, Binary and LargeBinary in Cast Kernels Support casting to/from DictionaryArray <--> LargeUTF8, Binary and LargeBinary in Cast Kernels Jan 19, 2022
@alamb alamb added the arrow Changes to the arrow crate label Jan 19, 2022
@alamb alamb added good first issue Good for newcomers help wanted labels Aug 11, 2022
@alamb
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alamb commented Aug 11, 2022

Specifically, we would like to add support to the cast and cast_with_options kernels:
https://docs.rs/arrow/20.0.0/arrow/compute/kernels/cast/index.html
https://docs.rs/arrow/20.0.0/arrow/compute/kernels/cast/fn.cast_with_options.html

@viirya viirya mentioned this issue Jan 6, 2023
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@viirya viirya mentioned this issue Jan 17, 2023
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arrow Changes to the arrow crate enhancement Any new improvement worthy of a entry in the changelog good first issue Good for newcomers help wanted
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Enable casting between Utf8/LargeUtf8 and Binary/LargeBinary viirya/arrow-rs
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@alamb @tustvold