[9.4] ESQL: make unmapped_fields="load" automatically trigger for partially mapped fields (#144228)#146262
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elasticsearchmachine merged 1 commit intoelastic:9.4from Apr 15, 2026
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… mapped fields (elastic#144228) * Unconditionally load partially mapped keyword fields, whether they are mentioned in expressions or not. Also, always load values of partially mapped fields from the indices where they are mapped. * Fix "optimized incorrectly" for `KEEP foo` with partially mapped fields. * Move detection of PUNKs/PUKs to ResolveTable. * Add temporary manual validation against usage of PUNKs in expressions to keep current behavior. * Add ability to unmap fields to CsvTestsDataLoader. --------- Co-authored-by: Mouhcine Aitounejjar <5037925+mouhc1ne@users.noreply.github.com>
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Backports the following commits to 9.4: