pub enum JoinConstraint {
On(Expr),
Using(Vec<ObjectName>),
Natural,
None,
}Expand description
Represents how two tables are constrained in a join: ON, USING, NATURAL, or none.
Variants§
On(Expr)
ON <expr> join condition.
Using(Vec<ObjectName>)
USING(...) list of column names.
Natural
NATURAL join (columns matched automatically).
None
No constraint specified (e.g. CROSS JOIN).
Trait Implementations§
Source§impl Clone for JoinConstraint
impl Clone for JoinConstraint
Source§fn clone(&self) -> JoinConstraint
fn clone(&self) -> JoinConstraint
Returns a duplicate 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 more
Source§impl Debug for JoinConstraint
impl Debug for JoinConstraint
Source§impl<'de> Deserialize<'de> for JoinConstraint
impl<'de> Deserialize<'de> for JoinConstraint
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
where __D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
Source§impl Hash for JoinConstraint
impl Hash for JoinConstraint
Source§impl Ord for JoinConstraint
impl Ord for JoinConstraint
Source§fn cmp(&self, other: &JoinConstraint) -> Ordering
fn cmp(&self, other: &JoinConstraint) -> Ordering
1.21.0 · Source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
where Self: Sized,
Compares and returns the maximum of two values. Read more
Source§impl PartialEq for JoinConstraint
impl PartialEq for JoinConstraint
Source§impl PartialOrd for JoinConstraint
impl PartialOrd for JoinConstraint
Source§fn partial_cmp(&self, other: &JoinConstraint) -> Option<Ordering>
fn partial_cmp(&self, other: &JoinConstraint) -> Option<Ordering>
This method returns an ordering between self and other values if one exists. Read more
1.0.0 · Source§fn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · Source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
Tests less than or equal to (for self and other) and is used by the
<= operator. Read more
Source§impl Serialize for JoinConstraint
impl Serialize for JoinConstraint
Source§impl Spanned for JoinConstraint
§partial span
Missing spans:
impl Spanned for JoinConstraint
§partial span
Missing spans:
Source§impl Visit for JoinConstraint
impl Visit for JoinConstraint
Source§impl VisitMut for JoinConstraint
impl VisitMut for JoinConstraint
Source§fn visit<V: VisitorMut>(&mut self, visitor: &mut V) -> ControlFlow<V::Break>
fn visit<V: VisitorMut>(&mut self, visitor: &mut V) -> ControlFlow<V::Break>
Mutably visit this node with the provided VisitorMut. Read more
impl Eq for JoinConstraint
impl StructuralPartialEq for JoinConstraint
Auto Trait Implementations§
impl Freeze for JoinConstraint
impl RefUnwindSafe for JoinConstraint
impl Send for JoinConstraint
impl Sync for JoinConstraint
impl Unpin for JoinConstraint
impl UnwindSafe for JoinConstraint
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
where 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<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
where T: Clone,
impl<T> DeserializeOwned for Twhere
T: for<'de> Deserialize<'de>,
where T: for<'de> Deserialize<'de>,