Struct OrderBy 

pub struct OrderBy {
    pub expr: Expr,
    pub desc: bool,
    pub nulls_first: Option<bool>,
    pub collation: Option<String>,
}

Fields

expr: Expr

desc: bool

false = ASC (default), true = DESC.

nulls_first: Option<bool>

v7.24 (mailrs round-16 A) — explicit NULLS FIRST / NULLS LAST. None = PG default (NULLS LAST for ASC, NULLS FIRST for DESC); the engine resolves the effective value via nulls_first.unwrap_or(desc).

collation: Option<String>

v7.39 (round 691) — an explicit COLLATE written on this key. It lives here rather than in the expression for the same reason desc does: at an ORDER BY key a collation is ordering information, and nothing downstream of the sort needs it. A new Expr variant would instead put a new arm on eval_expr, which this repo has measured to overflow the debug stack.

None means none was written, and the key falls back to whatever its COLUMN declares — which is every key that existed before this.

Trait Implementations

impl Clone for OrderBy

fn clone(&self) -> OrderBy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OrderBy

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

Formats the value using the given formatter.

impl PartialEq for OrderBy

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for OrderBy