Struct rust_query::Query

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

This is the base type for other query types like GroupQuery and Exec. It contains most query functionality like joining tables and doing sub-queries.

Implementations

impl<'inner> 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.