Struct OrderKey 

pub struct OrderKey {
    pub field: Expr,
    pub dir: OrderDir,
}

Ordering key. The planner sorts lexicographically by the list of keys — first key dominant; ties broken by the next key.

Fields

field: Expr

Expression evaluated per row to produce the sort key.

dir: OrderDir

Sort direction.

Trait Implementations

impl Clone for OrderKey

fn clone(&self) -> OrderKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OrderKey

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for OrderKey

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for OrderKey

fn eq(&self, other: &OrderKey) -> 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 Serialize for OrderKey

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for OrderKey