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

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radmirnovii:dict-peel-elementwise

Commits on Aug 23, 2026

bench: scalar functions over dictionary-encoded columns
radmirnovii
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fc6ac63
feat: add ScalarUDFImpl::evaluates_elementwise
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a216e79
perf: evaluate elementwise functions once per distinct dictionary value
radmirnovii
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7040e6a
perf: reuse a dictionary's result across the batches that share it
radmirnovii
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85c7e6c
perf: preserve dictionary encoding for encode
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5b6da84
perf: evaluate reverse once per distinct dictionary value
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58d278d
perf: evaluate initcap once per distinct dictionary value
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c088d4c