FindFirstOperation

Struct FindFirstOperation 

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pub struct FindFirstOperation<E: QueryEngine, M: Model> { /* private fields */ }
Expand description

A query operation that finds the first record matching the filter.

Unlike FindUnique, this doesn’t require a unique constraint.

§Example

let user = client
    .user()
    .find_first()
    .r#where(user::email::contains("@example.com"))
    .order_by(user::created_at::desc())
    .exec()
    .await?;

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impl<E: QueryEngine, M: Model> FindFirstOperation<E, M>

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pub fn new(engine: E) -> Self

Create a new FindFirst operation.

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pub fn where(self, filter: impl Into<Filter>) -> Self

Add a filter condition.

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pub fn order_by(self, order: impl Into<OrderBy>) -> Self

Set the order by clause.

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pub fn select(self, select: impl Into<Select>) -> Self

Select specific fields.

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pub fn build_sql(&self) -> (String, Vec<FilterValue>)

Build the SQL query.

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pub async fn exec(self) -> QueryResult<Option<M>>
where M: Send + 'static,

Execute the query and return an optional result.

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pub async fn exec_required(self) -> QueryResult<M>
where M: Send + 'static,

Execute the query and error if not found.

Auto Trait Implementations§

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impl<E, M> Freeze for FindFirstOperation<E, M>
where E: Freeze,

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impl<E, M> RefUnwindSafe for FindFirstOperation<E, M>

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impl<E, M> Send for FindFirstOperation<E, M>

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impl<E, M> Sync for FindFirstOperation<E, M>

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impl<E, M> Unpin for FindFirstOperation<E, M>
where E: Unpin, M: Unpin,

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impl<E, M> UnwindSafe for FindFirstOperation<E, M>
where E: UnwindSafe, M: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where 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 T
where T: ?Sized,

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fn borrow(&self) -> &T

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

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

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

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more