Enum tidb_query_expr::types::RpnExpressionNode[−][src]

[−]
pub enum RpnExpressionNode {
    FnCall {
        func_meta: RpnFnMeta,
        args_len: usize,
        field_type: FieldType,
        metadata: Box<dyn Any + Send>,
    },
    Constant {
        value: ScalarValue,
        field_type: FieldType,
    },
    ColumnRef {
        offset: usize,
    },
}
[−]

A type for each node in the RPN expression list.

Variants

FnCall
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Represents a function call.

[−]

Fields of FnCall

func_meta: RpnFnMetaargs_len: usizefield_type: FieldTypemetadata: Box<dyn Any + Send>
Constant
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Represents a scalar constant value.

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Fields of Constant

value: ScalarValuefield_type: FieldType
ColumnRef
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Represents a reference to a column in the columns specified in evaluation.

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Fields of ColumnRef

offset: usize

Trait Implementations

impl Debug for RpnExpressionNode[src][+]

Auto Trait Implementations

impl !RefUnwindSafe for RpnExpressionNode

impl Send for RpnExpressionNode

impl !Sync for RpnExpressionNode

impl Unpin for RpnExpressionNode

impl !UnwindSafe for RpnExpressionNode

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src][+]

impl<T> Borrow<T> for T where
    T: ?Sized, [src][+]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src][+]

impl<V, W> ConvertFrom<W> for V where
    W: ConvertTo<V>, [src][+]

impl<T> From<T> for T[src][+]

impl<T> Instrument for T[src][+]

impl<T, U> Into<U> for T where
    U: From<T>, [src][+]

impl<T> Pointable for T[src][+]

type Init = T

The type for initializers.

impl<T> Same<T> for T[src]

type Output = T

Should always be Self

impl<T> Sealed<T> for T where
    T: ?Sized, [src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src][+]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src][+]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<V, T> VZip<V> for T where
    V: MultiLane<T>, [src][+]