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[9.1] ES|QL: Add breaking change note for brackets in index names (#131012) #131036

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Jul 10, 2025
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[9.1] ES|QL: Add breaking change note for brackets in index names (#131012) #131036

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18 changes: 15 additions & 3 deletions docs/changelog/130427.yaml
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Original file line number Diff line number Diff line change
@@ -1,5 +1,17 @@
pr: 130427
summary: Disallow brackets in unquoted index pattersn
summary: Disallow brackets in unquoted index patterns
area: ES|QL
type: bug
issues: []
type: breaking
issues:
- 130378
breaking:
title: Unquoted index patterns do not allow `(` and `)` characters
area: ES|QL
details: >-
Previously, ES|QL accepted unquoted index patterns containing brackets, such as `FROM index(1) | ENRICH policy(2)`.

This query syntax is no longer valid because it could conflict with subquery syntax, where brackets are used as delimiters.

Brackets are now only allowed in quoted index patterns. For example: `FROM "index(1)" | ENRICH "policy(2)"`.
impact: "This affects existing queries containing brackets in index or policy names, i.e. in FROM, ENRICH, and LOOKUP JOIN commands."
notable: false
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