Enum dbcrossbarlib::IfExists [−][src]
What to do if the destination already exists.
Variants
If the destination exists, return an error.
If the destination exists, try to append the new data.
If the destination exists, overwrite the existing data.
If the destination exists, either update or insert using the specified
columns as the key. The list of keys must be non-empty, but we currently
only enforce that when parsing in FromStr
.
Trait Implementations
impl Clone for IfExists
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impl Debug for IfExists
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impl Default for IfExists
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impl Display for IfExists
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impl Eq for IfExists
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impl FromStr for IfExists
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type Err = Error
The associated error which can be returned from parsing.
fn from_str(s: &str) -> Result<IfExists>
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impl PartialEq<IfExists> for IfExists
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impl StructuralEq for IfExists
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impl StructuralPartialEq for IfExists
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Auto Trait Implementations
impl RefUnwindSafe for IfExists
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impl Send for IfExists
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impl Sync for IfExists
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impl Unpin for IfExists
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impl UnwindSafe for IfExists
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<Q, K> Equivalent<K> for Q where
K: Borrow<Q> + ?Sized,
Q: Eq + ?Sized,
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K: Borrow<Q> + ?Sized,
Q: Eq + ?Sized,
pub fn equivalent(&self, key: &K) -> bool
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impl<T> From<T> for T
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impl<T> Instrument for T
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pub fn instrument(self, span: Span) -> Instrumented<Self>
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pub fn in_current_span(self) -> Instrumented<Self>
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impl<T> Instrument for T
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pub fn instrument(self, span: Span) -> Instrumented<Self>
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pub fn in_current_span(self) -> Instrumented<Self>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T> SendSyncUnwindSafe for T where
T: Send + Sync + UnwindSafe + ?Sized,
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T: Send + Sync + UnwindSafe + ?Sized,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,