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datafusion/docs/source/library-user-guide
Michael Kleen 8fc9681b74 feat: Support planning subqueries with OuterReferenceColumn belongs to non-adjacent outer relations (#19930)
## Which issue does this PR close?

Cleaned-up version of https://github.com/apache/datafusion/pull/18806
with:

- Removed `outer_queries_schema` from PlannerContext
- Planning logic only (optimizer modifications removed)
- sql logic tests moved to sql_integration.rs

- Closes https://github.com/apache/datafusion/issues/19816


## Rationale for this change

See https://github.com/apache/datafusion/pull/18806

## What changes are included in this PR?

See https://github.com/apache/datafusion/pull/18806

## Are these changes tested?

Yes

## Are there any user-facing changes?

`outer_queries_schema` is removed from PlannerContext.

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Co-authored-by: Duong Cong Toai <duongcongtoai.fjc@gmail.com>
Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>
2026-02-09 13:51:59 +00:00
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