perf: preserve dictionary encoding for lower/upper to avoid materializing low-cardinality columns - #22905

Merged

Jefffrey merged 7 commits into

apache:mainfrom

lyne7-sc:perf/dictionary_scalar

Jul 8, 2026

Commits on Jul 6, 2026

perf: preserve dictionary encoding for case conversion
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1896e06
Update signature.rs
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4d32c12
docs: use Coercion constructor in UDF examples
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8f0f701
use boolean flags for encoding preservation
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b1bb38d
address dictionary preservation review feedback
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789014d
add tests
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adbdd13

Commits on Jul 7, 2026

added upgrading documentation
lyne7-sc
authored
364d9d0