opensearch-project / opensearch-project/sql

[ENHANCEMENT] Pushdown Lucene supported regex to DSL query in regex_match function.

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@vamsimanohar is already working on this.

Since Aug 25, 2025.

enhancement PPL pushdown
Dominant language
Java
Stars
176
Forks
229
Avg merge
2d 21h
Merged PRs (30d)
43

Description

In regex_match function, we always use script pushdown as PPL supports Java Regex and DSL supports a different Lucene regex.

But majority of the use cases will have plain regex which could be supported in Lucene and if we can push these queries to DSL it would increase the query efficiency.

The ask of this issues to pushdown to DSL regexp query whenever possible in case of regex_match function.

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