Struct Query 

pub struct Query<'a> { /* private fields */ }

A query to Mariadb/Mysql

Implementations

impl<'a> Query<'a>

pub fn information(&self) -> Option<&StatementInformation>

Get information about the prepared statement, if the QueryOptions::information was enabled

pub fn bind<T: Bind + ?Sized>(self, v: &T) -> ConnectionResult<Self>

Bind the next argument to the query

pub async fn fetch_optional_map<M: RowMap<'a>>( self, ) -> Result<Option<M::T>, M::E>

Execute the query and return zero or one mapped rows

All arguments must have been bound

If the query returns more than one row an error is returned

pub fn fetch_optional<T: FromRow<'a>>( self, ) -> impl Future<Output = ConnectionResult<Option<T>>> + Send

Execute the query and return zero or one rows

All arguments must have been bound

If the query returns more than one row an error is returned

pub async fn fetch_one<T: FromRow<'a>>(self) -> ConnectionResult<T>

Execute the query and return one row

All arguments must have been bound

If the query does not return exactly one row an error is returned

pub async fn fetch_all_map<M: RowMap<'a>>(self) -> Result<Vec<M::T>, M::E>

Execute the query and return all mapped rows in a vector

All arguments must have been bound

pub fn fetch_all<T: FromRow<'a>>( self, ) -> impl Future<Output = ConnectionResult<Vec<T>>> + Send

Execute the query and return all rows in a vector

All arguments must have been bound

pub async fn fetch(self) -> ConnectionResult<QueryIterator<'a>>

Execute the query and return an iterator that can return the results

pub async fn fetch_map<M>(self) -> ConnectionResult<MapQueryIterator<'a, M>>

where for<'b> M: RowMap<'b>,

Execute the query and return an iterator that can return the mapped results

pub async fn execute(self) -> ConnectionResult<ExecuteResult>

Execute query that does not return any columns