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ESQL: pushdown to_upper/to_lower in like/rlike #127479

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costin opened this issue Apr 28, 2025 · 2 comments
Open

ESQL: pushdown to_upper/to_lower in like/rlike #127479

costin opened this issue Apr 28, 2025 · 2 comments
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:Analytics/ES|QL AKA ESQL >enhancement Team:Analytics Meta label for analytical engine team (ESQL/Aggs/Geo)

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@costin
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costin commented Apr 28, 2025

Description

Similar to #118304, ESQL should catch this "pattern" not just for equality but also pattern matching:

...
| WHERE  TO_UPPER(string_a) like "String"	            // this will never match since the value contains lower case chars
| WHERE  TO_LOWER(string_b) like "abc"               // rewritten as a case-insensitive wildcard query
| WHERE  TO_LOWER(string_b) rlike "abc.*xyz"      // rewritten as a case-insensitive regex query
...
@elasticsearchmachine elasticsearchmachine added the Team:Analytics Meta label for analytical engine team (ESQL/Aggs/Geo) label Apr 28, 2025
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Pinging @elastic/es-analytical-engine (Team:Analytics)

@luigidellaquila
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We'll have to consider this apache/lucene#14378 (and the fix)

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