Struct SortGroup 

pub struct SortGroup {
    pub target: usize,
    pub operator: u32,
    pub sort: u32,
    pub equal: u32,
    pub nulls_first: bool,
    pub hashable: bool,
}

An item of ORDER BY, GROUP BY, DISTINCT or DISTINCT ON, as SortGroupClause.

Fields

target: usize

The index of the column in crate::Query::targets.

operator: u32

The OID of the sort operator, or 0.

sort: u32

The function of the operator that puts a value first, < for ASC and > for DESC, or 0 when the type has no order.

equal: u32

The function of the = operator.

nulls_first: bool

True when a null comes before the other values.

hashable: bool

True when the = operator can use a hash table, as op_hashjoinable gives it.

Trait Implementations

impl Clone for SortGroup

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SortGroup

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

Formats the value using the given formatter.

impl Eq for SortGroup

impl PartialEq for SortGroup

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SortGroup