Struct rust_query::Exec

pub struct Exec<'outer, 'inner> { /* private fields */ }

This is the top level query type and dereferences to Query. It has methods for turning queries into vectors and for inserting in the database.

Implementations

impl<'outer, 'inner> Exec<'outer, 'inner>

pub fn insert<V: Writable<'inner>>(&'inner mut self, val: V)

Insert a new row for every row in the query.

impl<'outer, 'inner> Exec<'outer, 'inner>

pub fn into_vec<F, T>(&self, limit: u32, f: F) -> Vec<T>

where F: FnMut(Row<'_, 'inner>) -> T,

Turn a database query into a rust Vec of results. The callback is called exactly once for each row. The callback argument Row can be used to turn dummies into rust values.

Methods from Deref<Target = Query<'inner>>

pub fn table<T: HasId>(&mut self, t: T) -> Db<'inner, T>

Join a table, this is like Iterator::flat_map but for queries.

pub fn flat_table<T: Table>(&mut self, t: T) -> T::Dummy<'inner>

Join a table that has no integer primary key. Refer to Query::table for more information about joining tables.

pub fn query<F, R>(&self, f: F) -> R

where F: for<'a> FnOnce(&'a mut GroupQuery<'inner, 'a>) -> R,

Perform a sub-query that returns a single result for each of the current rows.

pub fn filter(&mut self, prop: impl Value<'inner>)

Filter rows based on a column.

pub fn filter_some<T: MyIdenT>( &mut self, val: &Db<'inner, Option<T>> ) -> Db<'inner, T>

Filter out rows where this column is None.

Trait Implementations

impl<'outer, 'inner> Deref for Exec<'outer, 'inner>

type Target = Query<'inner>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'outer, 'inner> DerefMut for Exec<'outer, 'inner>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.