Refactor `nvl2` Function to Support Lazy Evaluation and Simplification via CASE Expression#18191

Merged

alamb merged 7 commits intoapache:mainfrom

kosiew:nvl2-17983

Oct 24, 2025

Commits on Oct 22, 2025

Update datafusion/functions/src/core/nvl2.rs

kosiew
and
Jefffrey
authored

Commits on Oct 23, 2025

Made the nvl2 scalar UDF return an internal error when it reaches execution without being simplified to a CASE expression, removing the eager evaluation helpers that previously enforced eager seman…
kosiew
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