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ESQL: Pushdown constructs doing case-insensitive regexes (#128393)

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This introduces an optimization to pushdown to Lucense those language constructs that aim at case-insensitive regular expression matching, used with `LIKE` and `RLIKE` operators, such as:
* `| WHERE TO_LOWER(field) LIKE "abc*"`
* `| WHERE TO_UPPER(field) RLIKE "ABC.*"` 
 
These are now pushed as case-insensitive `wildcard` and `regexp` respectively queries down to Lucene.

Closes #127479
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Bogdan Pintea 2025-05-30 10:55:00 +02:00 • committed by GitHub
parent cc461afa0a
commit 0a8091605b
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benchmarks/src/main/java/org/elasticsearch/benchmark/compute/operator/EvalBenchmark.java
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@ -48,9 +48,9 @@ import org.elasticsearch.xpack.esql.expression.function.scalar.math.Abs;
import org.elasticsearch.xpack.esql.expression.function.scalar.math.RoundTo;
import org.elasticsearch.xpack.esql.expression.function.scalar.multivalue.MvMin;
import org.elasticsearch.xpack.esql.expression.function.scalar.nulls.Coalesce;
import org.elasticsearch.xpack.esql.expression.function.scalar.string.RLike;
import org.elasticsearch.xpack.esql.expression.function.scalar.string.ToLower;
import org.elasticsearch.xpack.esql.expression.function.scalar.string.ToUpper;
import org.elasticsearch.xpack.esql.expression.function.scalar.string.regex.RLike;
import org.elasticsearch.xpack.esql.expression.predicate.operator.arithmetic.Add;
import org.elasticsearch.xpack.esql.expression.predicate.operator.comparison.Equals;
import org.elasticsearch.xpack.esql.expression.predicate.operator.comparison.LessThan;