TableScanProjectionSpec

llkv_plan::table_scan

Enum TableScanProjectionSpec

pub enum TableScanProjectionSpec {
    Column {
        logical_field_id: LogicalFieldId,
        data_type: DataType,
        alias: Option<String>,
    },
    Computed {
        expr: ScalarExpr<FieldId>,
        alias: String,
        data_type: DataType,
    },
}

Expand description

Projection descriptor for building table-scan plan graphs without depending on storage-specific types.

Variants§

Column

Fields

§logical_field_id: LogicalFieldId

§data_type: DataType

§alias: Option<String>

Computed

Fields

§expr: ScalarExpr<FieldId>

§alias: String

§data_type: DataType

Auto Trait Implementations§

impl Freeze for TableScanProjectionSpec

impl RefUnwindSafe for TableScanProjectionSpec

impl Send for TableScanProjectionSpec

impl Sync for TableScanProjectionSpec

impl Unpin for TableScanProjectionSpec

impl UnwindSafe for TableScanProjectionSpec

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,