Struct UniqueConstraint 

pub struct UniqueConstraint {
    pub table: Cow<'static, str>,
    pub name: Cow<'static, str>,
    pub columns: Cow<'static, [Cow<'static, str>]>,
    pub name_explicit: bool,
}

A unique constraint, as stored in migration snapshots.

Fields

table: Cow<'static, str>

Parent table name

name: Cow<'static, str>

Constraint name

columns: Cow<'static, [Cow<'static, str>]>

Columns in the unique constraint

name_explicit: bool

Whether the user gave the constraint name (rather than it being generated)

Implementations

impl UniqueConstraint

pub fn to_constraint_sql(&self) -> String

Renders CONSTRAINT name UNIQUE(...).

impl UniqueConstraint

pub fn new( table: impl Into<Cow<'static, str>>, name: impl Into<Cow<'static, str>>, columns: impl Into<Cow<'static, [Cow<'static, str>]>>, ) -> Self

Creates a unique constraint.

pub fn from_strings(table: String, name: String, columns: Vec<String>) -> Self

Creates a unique constraint from owned strings.

pub fn name(&self) -> &str

Returns the constraint name.

pub fn table(&self) -> &str

Returns the table name.

Trait Implementations

impl Clone for UniqueConstraint

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 UniqueConstraint

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

Formats the value using the given formatter.

impl Default for UniqueConstraint

fn default() -> Self

Returns the “default value” for a type.

impl Eq for UniqueConstraint

impl From<UniqueConstraintDef> for UniqueConstraint

fn from(def: UniqueConstraintDef) -> Self

Converts to this type from the input type.

impl PartialEq for UniqueConstraint

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for UniqueConstraint