Enum Uniqueness 

pub enum Uniqueness {
    Unique,
    Duplicates,
}

Whether a CREATE INDEX declared UNIQUE.

An enum rather than a bool beside another bool (task-1962, A9). bind_create_index took unique and if_not_exists adjacent and positional; swapping them compiles and declares a unique index where the statement asked for IF NOT EXISTS.

Variants

Unique

CREATE UNIQUE INDEX: two rows may not share a key.

Duplicates

CREATE INDEX: a key may repeat.

Trait Implementations

impl Clone for Uniqueness

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Uniqueness

impl Debug for Uniqueness

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

Formats the value using the given formatter.

impl Eq for Uniqueness

impl PartialEq for Uniqueness

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Uniqueness