Struct Relation 

pub struct Relation {
    pub oid: u32,
    pub columns: Vec<Column>,
    pub subquery: Option<Box<Query>>,
    pub function: Option<FromFunction>,
    pub values: Option<Vec<Vec<Expr>>>,
    pub name: String,
    pub alias: Option<Vec<String>>,
    pub lateral: bool,
    pub cte: Option<CteRef>,
    pub tablesample: Option<TableSample>,
    pub only: bool,
    pub perm: Option<usize>,
}

A relation of FROM, as a RangeTblEntry of the kind RTE_RELATION or RTE_SUBQUERY.

Fields

oid: u32

The OID of the pg_class row, or 0 for a subquery.

columns: Vec<Column>

The columns of the relation, with their real names. The columns of a subquery are the columns of its result.

subquery: Option<Box<Query>>

The query of a subquery in FROM, or the query of a view, which the executor reads in place of the view.

function: Option<FromFunction>

The calls of a function in FROM.

values: Option<Vec<Vec<Expr>>>

The rows of a VALUES list, each with one expression for each column.

name: String

eref->aliasname: the alias, or the name that the analyzer gives the relation, such as the name of the table, unnamed_subquery or the name of the function.

alias: Option<Vec<String>>

The names of the columns of the alias when the query gives the relation an alias, as alias->colnames. Relation::name is then the name of the alias.

lateral: bool

True when the query writes LATERAL before a subquery or a function.

cte: Option<CteRef>

The query of WITH that the relation reads.

tablesample: Option<TableSample>

The TABLESAMPLE clause of a table.

only: bool

True for ONLY before the name of a table. A partitioned table then gives no rows, and a table gives no rows of its children of INHERITS.

perm: Option<usize>

perminfoindex: the index of the privileges of a table or a view in the privileges of the statement while the analyzer reads the statement, or None for a relation that needs no privileges.

Implementations

impl Relation

pub fn json_table(&self) -> Option<&JsonTable>

The call of JSON_TABLE when the relation is one.

Trait Implementations

impl Clone for Relation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Relation

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

Formats the value using the given formatter.

impl PartialEq for Relation

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Relation