Struct sqlx_model::Update

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pub struct Update<'t, DB, T, CT>where
    T: ModelUpdateData<'t, DB, CT>,
    CT: UpdateData<'t, DB>,
    DB: Database,{
    pub change: CT,
    /* private fields */
}
Expand description

更新操作

Fields§

§change: CT

Implementations§

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impl<'t, DB, T, CT> Update<'t, DB, T, CT>where
T: ModelUpdateData<'t, DB, CT>,
CT: UpdateData<'t, DB>,
DB: Database,

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pub fn new(val: CT) -> Update<'t, DB, T, CT>

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pub fn model<'q: 't>(val: &'q T, source: &Option<&T>) -> Update<'t, DB, T, CT>

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pub fn empty_change(&self) -> bool

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pub fn sql_sets(&self) -> String

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pub fn sql_values_sets(&self) -> String

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pub fn bind_values<'q>(
&'q self,
res: Query<'q, DB, <DB as HasArguments<'_>>::Arguments>
) -> Query<'q, DB, <DB as HasArguments<'_>>::Arguments>

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pub async fn execute_by_scalar_pk<'c, PT, E>(
&self,
pk_scalar: PT,
executor: E
) -> Result<<DB as Database>::QueryResult, Error>where
for<'q> PT: 'q + Send + Encode<'q, DB> + Type<DB>,
for<'n> <DB as HasArguments<'n>>::Arguments: Arguments<'n> + IntoArguments<'n, DB>,
E: Executor<'c, Database = DB>,

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pub async fn execute_by_where_call<'c, RB, E>(
&self,
where_sql: &str,
where_bind: RB,
executor: E
) -> Result<<DB as Database>::QueryResult, Error>where
for<'q> RB: FnOnce(Query<'q, DB, <DB as HasArguments<'_>>::Arguments>, &'q Update<'_, DB, T, CT>) -> Query<'q, DB, <DB as HasArguments<'q>>::Arguments>,
for<'n> <DB as HasArguments<'n>>::Arguments: Arguments<'n> + IntoArguments<'n, DB>,
E: Executor<'c, Database = DB>,

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pub async fn execute_by_where<'c, E>(
&self,
where_sql: &WhereOption,
executor: E
) -> Result<<DB as Database>::QueryResult, Error>where
for<'n> <DB as HasArguments<'n>>::Arguments: Arguments<'n> + IntoArguments<'n, DB>,
E: Executor<'c, Database = DB>,

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pub async fn execute_by_pk<'c, E>(
&self,
source: &T,
executor: E
) -> Result<<DB as Database>::QueryResult, Error>where
for<'n> <DB as HasArguments<'n>>::Arguments: Arguments<'n> + IntoArguments<'n, DB>,
E: Executor<'c, Database = DB>,

Auto Trait Implementations§

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impl<'t, DB, T, CT> RefUnwindSafe for Update<'t, DB, T, CT>where
CT: RefUnwindSafe,
DB: RefUnwindSafe,
T: RefUnwindSafe,

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impl<'t, DB, T, CT> Send for Update<'t, DB, T, CT>where
CT: Send + Sync,
T: Sync,

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impl<'t, DB, T, CT> Sync for Update<'t, DB, T, CT>where
CT: Sync,
DB: Sync,
T: Sync,

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impl<'t, DB, T, CT> Unpin for Update<'t, DB, T, CT>where
CT: Unpin,
DB: Unpin,

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impl<'t, DB, T, CT> UnwindSafe for Update<'t, DB, T, CT>where
CT: UnwindSafe + RefUnwindSafe,
DB: UnwindSafe,
T: RefUnwindSafe,

Blanket Implementations§

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impl<T> Any for Twhere
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

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fn vzip(self) -> V