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Improve substr() performance by avoiding using owned string #13687

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richox opened this issue Dec 8, 2024 · 0 comments · Fixed by #13688
Closed

Improve substr() performance by avoiding using owned string #13687

richox opened this issue Dec 8, 2024 · 0 comments · Fixed by #13688
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enhancement New feature or request

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@richox
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richox commented Dec 8, 2024 •
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Is your feature request related to a problem or challenge?

current substr() implementation uses owned string to create StringArrays, which causes lots of memory fragment and slows down the execution.

Describe the solution you'd like

use StringBuilder to avoid creating owned strings.

Describe alternatives you've considered

No response

Additional context

No response
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Improve substr() performance by avoiding using owned string richox/arrow-datafusion
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