[8.18] ESQL: Fix NPE on empty to_lower/to_upper call (#131917)#131922
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elasticsearchmachine merged 1 commit intoelastic:8.18from Jul 27, 2025
Merged
[8.18] ESQL: Fix NPE on empty to_lower/to_upper call (#131917)#131922elasticsearchmachine merged 1 commit intoelastic:8.18from
elasticsearchmachine merged 1 commit intoelastic:8.18from
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Apparently, when calling to_lower or to_upper with no parameters, an NPE was thrown, instead of a proper error. AFAICT, this is an old left-over from when these functions were imported from a much older version. Resolves elastic#131913.
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Backports the following commits to 8.18: