Struct ExprLength 

pub struct ExprLength {
    pub expr: Box<Expr>,
}

Integer: number of elements in an array.

PostgreSQL: cardinality(expr). Drives Path::len and Path::is_empty.

Fields

expr: Box<Expr>

The array whose length is being measured.

Trait Implementations

impl Clone for ExprLength

fn clone(&self) -> ExprLength

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExprLength

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

Formats the value using the given formatter.

impl From<ExprLength> for Expr

fn from(value: ExprLength) -> Self

Converts to this type from the input type.

impl PartialEq for ExprLength

fn eq(&self, other: &ExprLength) -> 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 ExprLength