Struct Derived 

pub struct Derived {
    pub table: u32,
    pub types: Vec<u32>,
    pub exprs: Vec<Expr>,
    pub predicate: Vec<Expr>,
}

The key of a unique index with an expression or a predicate, which FormIndexDatum computes for each row. A row that does not pass the predicate is not in the index, as ExecInsertIndexTuples checks it with ExecQual. Unique::columns has the places of the key columns in the values of the expressions.

Fields

table: u32

The OID of the table.

types: Vec<u32>

The type of each column of the table.

exprs: Vec<Expr>

The expression of each key column, with the columns of the table as columns of the relation 0. A key column that is a column of the table is a variable.

predicate: Vec<Expr>

The parts of the predicate, indpred, or none for an index with no predicate.

Trait Implementations

impl Clone for Derived

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 Derived

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

Formats the value using the given formatter.

impl PartialEq for Derived

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Derived