[9.1] Fix behavior for _index LIKE for ESQL (#130849) #130948
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Fixes _index LIKE <pattern> to always have normal text matching semantics. Implement a generic ExpressionQuery and ExpressionQueryBuilder that can be serialized to the data node. Then the ExpressionQueryBuilder can build an Automaton using TranslationAware.asLuceneQuery() and execute it in Lucine. Introduces a breaking change for LIKE on _index fields. The old like behavior is not correct and does not have normal like semantics from ESQL. Customers upgrading from old build to new build might see a regression, where the data changes due to the like filters on clustering produces different results, but the new results are correct. Behavior for ESQL New CCS to New => New behavior everywhere Old CCS to New => Old behavior everywhere (the isForESQL flag is not passed in from old) New CCS to Old => New behavior for new, old behavior for old (the isForESQL cannot be passed, old does not know about it). Old CCS to Old => Old behavior everywhere Closes elastic#129511 (cherry picked from commit 8c4eaf9) # Conflicts: # server/src/main/java/org/elasticsearch/TransportVersions.java # x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlCapabilities.java # x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/optimizer/LocalPhysicalPlanOptimizerTests.java
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nik9000
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Jul 11, 2025
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