Enum LimitExpr 

pub enum LimitExpr {
    Literal(u32),
    Placeholder(u16),
}

v7.9.24 — LIMIT / OFFSET value. Integer literal at parse time or a placeholder $N resolved during extended-query Bind. mailrs migration follow-up H2.

Variants

Literal(u32)

LIMIT 10 — value known at parse time.

Placeholder(u16)

LIMIT $N — the 1-based parameter index, resolved against the bind values when the prepared statement executes.

Implementations

impl LimitExpr

pub fn as_literal(self) -> Option<u32>

Convenience for the simple-query path where no placeholders can possibly exist. Returns the literal value or None if this is a placeholder (caller must surface as Unsupported).

Trait Implementations

impl Clone for LimitExpr

fn clone(&self) -> LimitExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LimitExpr

impl Debug for LimitExpr

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

Formats the value using the given formatter.

impl Display for LimitExpr

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

Formats the value using the given formatter.

impl Eq for LimitExpr

impl PartialEq for LimitExpr

fn eq(&self, other: &LimitExpr) -> 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 StructuralPartialEq for LimitExpr