Enum postgres_parser::sys::SetOperation

#[repr(u32)]pub enum SetOperation {
    SETOP_NONE,
    SETOP_UNION,
    SETOP_INTERSECT,
    SETOP_EXCEPT,
}

Select Statement

A "simple" SELECT is represented in the output of gram.y by a single SelectStmt node; so is a VALUES construct. A query containing set operators (UNION, INTERSECT, EXCEPT) is represented by a tree of SelectStmt nodes, in which the leaf nodes are component SELECTs and the internal nodes represent UNION, INTERSECT, or EXCEPT operators. Using the same node type for both leaf and internal nodes allows gram.y to stick ORDER BY, LIMIT, etc, clause values into a SELECT statement without worrying whether it is a simple or compound SELECT.

Variants

SETOP_NONE

SETOP_UNION

SETOP_INTERSECT

SETOP_EXCEPT

Trait Implementations

impl Clone for SetOperation

fn clone(&self) -> SetOperation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for SetOperation

impl Debug for SetOperation

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SetOperation

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Eq for SetOperation

impl Hash for SetOperation

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, 

Feeds a slice of this type into the given [Hasher].

impl PartialEq<SetOperation> for SetOperation

fn eq(&self, other: &SetOperation) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Serialize for SetOperation

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl StructuralEq for SetOperation

impl StructuralPartialEq for SetOperation