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[main] [DOCS] Update wildcard query documentation (#120251) #120502

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Jan 21, 2025
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[main] [DOCS] Update wildcard query documentation (#120251) #120502

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3 changes: 3 additions & 0 deletions docs/reference/query-dsl/wildcard-query.asciidoc
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Expand Up @@ -81,6 +81,9 @@ the iterations needed to find matching terms and slow search performance.

[[wildcard-query-notes]]
==== Notes

Wildcard queries using `*` can be resource-intensive, particularly with leading wildcards. To improve performance, minimize their use and consider alternatives like the <<analysis-ngram-tokenizer,n-gram tokenizer>>. While this allows for more efficient searching, it may increase index size. For better performance and accuracy, combine wildcard queries with other query types like <<query-dsl-match-query,`match`>> or <<query-dsl-bool-query,`bool`>> to first narrow down results.

===== Allow expensive queries
Wildcard queries will not be executed if <<query-dsl-allow-expensive-queries, `search.allow_expensive_queries`>>
is set to false.
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