pub enum ConstraintKind {
UNSET,
INDEXED,
UNIQUE,
IDENTITY,
PRIMARY_KEY,
PRIMARY_KEY_AUTO,
PRIMARY_KEY_IDENTITY,
}
Expand description
The assigned constraint for a Table
Variants§
UNSET
INDEXED
Index no unique
UNIQUE
Index unique
IDENTITY
Unique + AutoInc
PRIMARY_KEY
Primary key column (implies Unique)
PRIMARY_KEY_AUTO
PrimaryKey + AutoInc
PRIMARY_KEY_IDENTITY
PrimaryKey + Identity
Trait Implementations§
source§impl Clone for ConstraintKind
impl Clone for ConstraintKind
source§fn clone(&self) -> ConstraintKind
fn clone(&self) -> ConstraintKind
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for ConstraintKind
impl Debug for ConstraintKind
source§impl Ord for ConstraintKind
impl Ord for ConstraintKind
source§fn cmp(&self, other: &ConstraintKind) -> Ordering
fn cmp(&self, other: &ConstraintKind) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Compares and returns the maximum of two values. Read more
source§impl PartialEq for ConstraintKind
impl PartialEq for ConstraintKind
source§fn eq(&self, other: &ConstraintKind) -> bool
fn eq(&self, other: &ConstraintKind) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for ConstraintKind
impl PartialOrd for ConstraintKind
source§fn partial_cmp(&self, other: &ConstraintKind) -> Option<Ordering>
fn partial_cmp(&self, other: &ConstraintKind) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self
and other
) and is used by the <=
operator. Read moreimpl Copy for ConstraintKind
impl Eq for ConstraintKind
impl StructuralPartialEq for ConstraintKind
Auto Trait Implementations§
impl Freeze for ConstraintKind
impl RefUnwindSafe for ConstraintKind
impl Send for ConstraintKind
impl Sync for ConstraintKind
impl Unpin for ConstraintKind
impl UnwindSafe for ConstraintKind
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more