[pull] main from apache:main

[pull]

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Created by pull[bot] (v2.0.0-alpha.1)

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Summary by Sourcery

Enhancements:

• Refactor the is_projection_unnecessary function to perform a cheaper trivial expression check before computing the projection schema

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Reviewer's Guide by Sourcery

The pull request modifies the is_projection_unnecessary function in datafusion/optimizer/src/optimize_projections/mod.rs to improve performance. It now checks if all projection expressions are trivial before comparing the projection schema with the input schema. This change avoids unnecessary schema comparisons when the expressions are trivial.

Sequence diagram for is_projection_unnecessary function

sequenceDiagram
  participant Optimizer
  participant LogicalPlan
  participant Expr

  Optimizer->>Optimizer: Calls is_projection_unnecessary(LogicalPlan, Expr[])
  alt All Expr are trivial
    Optimizer->>Expr: Checks if all Expr are trivial
    Expr-->>Optimizer: Returns true
    Optimizer->>LogicalPlan: Gets projection_schema(LogicalPlan, Expr[])
    LogicalPlan-->>Optimizer: Returns projection_schema
    Optimizer->>LogicalPlan: Compares projection_schema with input.schema()
    LogicalPlan-->>Optimizer: Returns true if schemas are equal
    Optimizer-->>Optimizer: Returns true
  else Not all Expr are trivial
    Optimizer->>Expr: Checks if all Expr are trivial
    Expr-->>Optimizer: Returns false
    Optimizer-->>Optimizer: Returns false
  end

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File-Level Changes

Change	Details	Files
Modified the is_projection_unnecessary function to first check if all expressions are trivial before comparing schemas.	Added a check to see if all projection expressions are trivial before comparing the projection schema with the input schema. Moved the trivial expression check to the beginning of the function for efficiency.	datafusion/optimizer/src/optimize_projections/mod.rs

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