Enum ColumnarValue

pub enum ColumnarValue<'a, S: Scalar> {
    Column(Column<'a, S>),
    Literal(LiteralValue),
}

The result of evaluating an expression.

Inspired by [datafusion_expr_common::ColumnarValue]

Variants

Column(Column<'a, S>)

A ColumnarValue::Column is a list of values.

Literal(LiteralValue)

A ColumnarValue::Literal is a single value with indeterminate size.

Implementations

impl<'a, S: Scalar> ColumnarValue<'a, S>

pub fn column_type(&self) -> ColumnType

Provides the column type associated with the column

pub fn into_column( &self, num_rows: usize, alloc: &'a Bump, ) -> Result<Column<'a, S>, ColumnarValueError>

Converts the ColumnarValue to a Column

Trait Implementations

impl<'a, S: Clone + Scalar> Clone for ColumnarValue<'a, S>

fn clone(&self) -> ColumnarValue<'a, S>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, S: Debug + Scalar> Debug for ColumnarValue<'a, S>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a, S: PartialEq + Scalar> PartialEq for ColumnarValue<'a, S>

fn eq(&self, other: &ColumnarValue<'a, S>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, S: Eq + Scalar> Eq for ColumnarValue<'a, S>

impl<'a, S: Scalar> StructuralPartialEq for ColumnarValue<'a, S>