This is supported on crate features
postgres
and def
only.Expand description
That each set of values for these columns must be unique across the whole table
Fields
name: String
columns: Vec<String>
Implementations
sourceimpl Unique
impl Unique
pub fn write(&self) -> IndexCreateStatement
This is supported on crate feature
writer
only.Trait Implementations
impl StructuralPartialEq for Unique
Auto Trait Implementations
impl RefUnwindSafe for Unique
impl Send for Unique
impl Sync for Unique
impl Unpin for Unique
impl UnwindSafe for Unique
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more