Enum ConstraintData 

#[non_exhaustive]
pub enum ConstraintData {
    Unique(UniqueConstraintData),
}

Data for a constraint attached to a table.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Unique(UniqueConstraintData)

Implementations

impl ConstraintData

pub fn unique_columns(&self) -> Option<&ColSet>

If this is a unique constraint, returns the columns that must be unique. Otherwise, returns None.

Trait Implementations

impl Clone for ConstraintData

fn clone(&self) -> ConstraintData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConstraintData

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

Formats the value using the given formatter.

impl From<ConstraintData> for RawConstraintDataV9

fn from(val: ConstraintData) -> Self

Converts to this type from the input type.

impl From<UniqueConstraintData> for ConstraintData

fn from(val: UniqueConstraintData) -> Self

Converts to this type from the input type.

impl PartialEq for ConstraintData

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ConstraintData

impl StructuralPartialEq for ConstraintData