Struct postgres_parser::nodes::RelabelType

pub struct RelabelType {
    pub arg: Option<Box<Expr>>,
    pub resulttype: Oid,
    pub resulttypmod: i32,
    pub resultcollid: Oid,
    pub relabelformat: CoercionForm,
    pub location: i32,
}

RelabelType

RelabelType represents a "dummy" type coercion between two binary compatible datatypes, such as reinterpreting the result of an OID expression as an int4. It is a noop at runtime; we only need it to provide a place to store the correct type to be attributed to the expression result during type resolution. (We can't get away with just overwriting the type field of the input expression node, so we need a separate node to show the coercion's result type.)

Fields

arg: Option<Box<Expr>>

resulttype: Oid

resulttypmod: i32

resultcollid: Oid

relabelformat: CoercionForm

location: i32

Trait Implementations

impl Debug for RelabelType

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for RelabelType

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

Deserialize this value from the given Serde deserializer.

impl Eq for RelabelType

impl PartialEq<RelabelType> for RelabelType

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

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

fn ne(&self, other: &RelabelType) -> bool

This method tests for !=.

impl Serialize for RelabelType

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 RelabelType

impl StructuralPartialEq for RelabelType