Enum SetExpr 

pub enum SetExpr {
    Select(Box<Select>),
    Query(Box<Query>),
    SetOperation {
        op: SetOperator,
        set_quantifier: SetQuantifier,
        left: Box<SetExpr>,
        right: Box<SetExpr>,
    },
    Values(Values),
    Insert(Statement),
    Update(Statement),
    Delete(Statement),
    Merge(Statement),
    Table(Box<Table>),
}

A node in a tree, representing a “query body” expression, roughly: SELECT ... [ {UNION|EXCEPT|INTERSECT} SELECT ...]

Variants

Select(Box<Select>)

Restricted SELECT .. FROM .. HAVING (no ORDER BY or set operations)

Query(Box<Query>)

Parenthesized SELECT subquery, which may include more set operations in its body and an optional ORDER BY / LIMIT.

SetOperation

UNION/EXCEPT/INTERSECT of two queries

Fields

op: SetOperator

set_quantifier: SetQuantifier

left: Box<SetExpr>

right: Box<SetExpr>

Values(Values)

Insert(Statement)

Update(Statement)

Delete(Statement)

Merge(Statement)

Table(Box<Table>)

Implementations

impl SetExpr

pub fn as_select(&self) -> Option<&Select>

If this SetExpr is a SELECT, returns the Select.

Trait Implementations

impl Clone for SetExpr

fn clone(&self) -> SetExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SetExpr

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

Formats the value using the given formatter.

impl Display for SetExpr

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

Formats the value using the given formatter.

impl Hash for SetExpr

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

where __H: Hasher,

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 Ord for SetExpr

fn cmp(&self, other: &SetExpr) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SetExpr

fn eq(&self, other: &SetExpr) -> 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 PartialOrd for SetExpr

fn partial_cmp(&self, other: &SetExpr) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Spanned for SetExpr

partial span

SetExpr::Table is not implemented.

fn span(&self) -> Span

Return the Span (the minimum and maximum Location) for this AST node, by recursively combining the spans of its children.

impl Visit for SetExpr

fn visit<V>(&self, visitor: &mut V) -> ControlFlow<<V as Visitor>::Break>

where V: Visitor,

impl VisitMut for SetExpr

fn visit<V>(&mut self, visitor: &mut V) -> ControlFlow<<V as VisitorMut>::Break>

where V: VisitorMut,

impl Eq for SetExpr

impl StructuralPartialEq for SetExpr