Struct ViewFindFirstOperation 

pub struct ViewFindFirstOperation<E: QueryEngine, V: View> { /* private fields */ }

A query operation that finds a single record from a view.

Implementations

impl<E: QueryEngine, V: View> ViewFindFirstOperation<E, V>

pub fn new(engine: E) -> Self

Create a new ViewFindFirst operation.

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

Add a filter condition.

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

Set the order by clause.

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

Build the SQL query.

pub async fn exec(self) -> QueryResult<Option<V>>

where V: Send + 'static + DeserializeOwned,

Execute the query and return the first result.