Struct datafusion_expr::expr::Exists

pub struct Exists {
    pub subquery: Subquery,
    pub negated: bool,
}

EXISTS expression

Fields

subquery: Subquery

subquery that will produce a single column of data

negated: bool

Whether the expression is negated

Implementations

impl Exists

pub fn new(subquery: Subquery, negated: bool) -> Self

Trait Implementations

impl Clone for Exists

fn clone(&self) -> Exists

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Exists

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

Formats the value using the given formatter.

impl Hash for Exists

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Exists

fn eq(&self, other: &Exists) -> 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 Eq for Exists

impl StructuralPartialEq for Exists