Struct QueryAs 

pub struct QueryAs<'a, T> { /* private fields */ }

A prepared query decoded into T.

Implementations

impl<'a, T: FromRow> QueryAs<'a, T>

pub fn new(sql: &'a str, params: &'a [&'a dyn ToSql]) -> Self

Builds a typed query from SQL and already-built parameters.

pub async fn execute<E: Executor>(&self, executor: &E) -> Result<u64, Error>

Runs the statement and returns the number of affected rows.

See Query::execute: rows produced by the statement are discarded.

pub async fn fetch_rows<E: Executor>( &self, executor: &E, ) -> Result<RowStream, Error>

Runs the statement and returns a stream of rows.

pub async fn fetch_all<E: Executor>( &self, executor: &E, ) -> Result<Vec<T>, Error>

Collects all rows into a Vec<T>.

pub async fn fetch_one<E: Executor>(&self, executor: &E) -> Result<T, Error>

Returns exactly one row, or Error::RowNotFound.

pub async fn fetch_optional<E: Executor>( &self, executor: &E, ) -> Result<Option<T>, Error>

Returns the first row, if any.