Struct Unique 

pub struct Unique {
    pub oid: u32,
    pub name: String,
    pub columns: Vec<usize>,
    pub types: Vec<u32>,
    pub shown: String,
    pub nulls_not_distinct: bool,
    pub derived: Option<Box<Derived>>,
    pub deferrable: Option<Deferrable>,
}

A unique index of the target table, which _bt_check_unique checks for each new version of a row.

Fields

oid: u32

The OID of the index.

name: String

The name of the index, for the error.

columns: Vec<usize>

The column of the table of each key column, from 0.

types: Vec<u32>

The type of each key column.

shown: String

The key columns as pg_get_indexdef_columns gives them, for the detail of the error.

nulls_not_distinct: bool

indnullsnotdistinct: a null is equal to a null, so two keys with nulls can conflict.

derived: Option<Box<Derived>>

The expressions and the predicate of an index with an expression or a predicate, or None for an index whose key is columns of the table.

deferrable: Option<Deferrable>

The constraint of an index that is not indimmediate, or None for an index that checks each key at once.

Trait Implementations

impl Clone for Unique

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 Unique

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

Formats the value using the given formatter.

impl PartialEq for Unique

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Unique