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PreimageResult

datafusion_expr::preimage

Enum PreimageResult 

Source 
pub enum PreimageResult {
    None,
    Range {
        expr: Expr,
        interval: Box<Interval>,
    },
}
Expand description

Return from crate::ScalarUDFImpl::preimage

Variants§

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None

No preimage exists for the specified value

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Range

The expression always evaluates to the specified constant given that expr is within the interval

Fields

§expr: Expr
§interval: Box<Interval>

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