Struct ExprSetOp 

pub struct ExprSetOp {
    pub op: SetOp,
    pub operands: Vec<ExprSet>,
}

A set operation combining multiple queries.

Applies a set operator (union, except, intersect) to combine the results of multiple queries into a single result set.

Examples

SELECT ... UNION SELECT ...       // combines with union
SELECT ... EXCEPT SELECT ...      // removes matching rows
SELECT ... INTERSECT SELECT ...   // keeps only common rows

Fields

op: SetOp

The set operation to apply.

operands: Vec<ExprSet>

The queries to combine.

Implementations

impl ExprSetOp

pub fn is_union(&self) -> bool

Trait Implementations

impl Clone for ExprSetOp

fn clone(&self) -> ExprSetOp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExprSetOp

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

Formats the value using the given formatter.

impl PartialEq for ExprSetOp

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