datafusion_expr::logical_plan

Enum InvariantLevel

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pub enum InvariantLevel {
    Always,
    Executable,
}

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Always

Invariants that are always true in DataFusion LogicalPlans such as the number of expected children and no duplicated output fields

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Executable

Invariants that must hold true for the plan to be “executable” such as the type and number of function arguments are correct and that wildcards have been expanded

To ensure a LogicalPlan satisfies the Executable invariants, run the Analyzer

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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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