Struct ColumnBinding 

pub struct ColumnBinding {
    pub table: u32,
    pub column: u32,
}

Which column, by identity rather than by name.

The binder gives every operator that introduces columns a table index, and a column is that index plus a position. Two columns called id from two sides of a join are two bindings and there is no ambiguity to resolve, which is the entire reason the bound plan has no names in it.

Fields

table: u32

The index of the operator that produces the column.

column: u32

The position of the column in that operator’s output.

Implementations

impl ColumnBinding

pub fn new(table: u32, column: u32) -> Self

A binding to the column at column of the operator numbered table.

Trait Implementations

impl Clone for ColumnBinding

fn clone(&self) -> ColumnBinding

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ColumnBinding

impl Debug for ColumnBinding

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

Formats the value using the given formatter.

impl Eq for ColumnBinding

impl Hash for ColumnBinding

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ColumnBinding

fn cmp(&self, other: &ColumnBinding) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for ColumnBinding

fn eq(&self, other: &ColumnBinding) -> bool

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for ColumnBinding

fn partial_cmp(&self, other: &ColumnBinding) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for ColumnBinding