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Minor: clean up titles and links n extending operators and optimizer pages #19317

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Minor: clean up titles and links n extending operators and optimizer …
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alamb Dec 16, 2025
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7 changes: 5 additions & 2 deletions docs/source/library-user-guide/extending-operators.md
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under the License.
-->

# Extending DataFusion's operators: custom LogicalPlan and Execution Plans
# Extending Operators

DataFusion supports extension of operators by transforming logical plan and execution plan through customized [optimizer rules](https://docs.rs/datafusion/latest/datafusion/optimizer/trait.OptimizerRule.html). This section will use the µWheel project to illustrate such capabilities.
DataFusion supports extending operators by transforming [`LogicalPlan`] and [`ExecutionPlan`] through customized [optimizer rules](https://docs.rs/datafusion/latest/datafusion/optimizer/trait.OptimizerRule.html). This section will use the µWheel project to illustrate such capabilities.

[`logicalplan`]: https://docs.rs/datafusion/latest/datafusion/logical_expr/enum.LogicalPlan.html
[`executionplan`]: https://docs.rs/datafusion/latest/datafusion/physical_plan/trait.ExecutionPlan.html

## About DataFusion µWheel

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7 changes: 5 additions & 2 deletions docs/source/library-user-guide/query-optimizer.md
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under the License.
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# DataFusion Query Optimizer
# Query Optimizer

[DataFusion][df] is an extensible query execution framework, written in Rust, that uses Apache Arrow as its in-memory
format.

DataFusion has modular design, allowing individual crates to be re-used in other projects.

This crate is a submodule of DataFusion that provides a query optimizer for logical plans, and
contains an extensive set of OptimizerRules that may rewrite the plan and/or its expressions so
contains an extensive set of [`OptimizerRule`]s and [`PhysicalOptimizerRules`] that may rewrite the plan and/or its expressions so
they execute more quickly while still computing the same result.

[`optimizerrule`]: https://docs.rs/datafusion/latest/datafusion/optimizer/trait.OptimizerRule.html
[`physicaloptimizerrules`]: https://docs.rs/datafusion/latest/datafusion/physical_optimizer/trait.PhysicalOptimizerRule.html

## Running the Optimizer

The following code demonstrates the basic flow of creating the optimizer with a default set of optimization rules
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