perf: evaluate elementwise scalar functions once per distinct dictionary value - #24588

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apache:mainfrom

radmirnovii:dict-peel-elementwise

Commits on Aug 26, 2026

bench: scalar functions over dictionary-encoded columns
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017b38f
feat: add ScalarUDFImpl::evaluates_elementwise
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93ab61d
perf: evaluate elementwise functions once per distinct dictionary value
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97a3b21
perf: reuse a dictionary's result across the batches that share it
radmirnovii
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3e2ad32
perf: preserve dictionary encoding for encode
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03eee3d
perf: evaluate reverse once per distinct dictionary value
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84c4076
perf: evaluate initcap once per distinct dictionary value
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b781e05
bench: consolidate the dictionary benchmarks; test: one fixture for peeling tests
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71bcf9f