Struct SelectTwoMany 

pub struct SelectTwoMany<E: EntityTrait, R: EntityTrait> { /* private fields */ }

A SELECT of an entity together with all of its related rows.

Produced by Select::find_with_related and Select::find_with_linked. The statement is the joined one of SelectTwo; all folds the result so that each E model, identified by its primary key, appears once with the related models collected in row order. LIMIT and OFFSET are deliberately not offered because they would count joined rows, not E models.

Implementations

impl<E: EntityTrait, R: EntityTrait> SelectTwoMany<E, R>

pub fn filter(self, cond: impl IntoCondition) -> Self

Adds a WHERE condition, ANDed with the previous ones.

pub fn order_by(self, column: E::Column, order: Order) -> Self

Adds ORDER BY a column of E in the given direction.

pub fn order_by_related(self, column: R::Column, order: Order) -> Self

Adds ORDER BY a column of R in the given direction.

pub fn order_by_expr(self, expr: Expr, order: Order) -> Self

Adds ORDER BY expr in the given direction.

pub fn build(&self) -> Statement

Renders the statement.

pub async fn all<C: ConnectionTrait>( self, db: &C, ) -> Result<Vec<(E::Model, Vec<R::Model>)>>

Fetches every E model with its related R models.

Models are returned in order of first appearance, so an ORDER BY on E orders the groups and one on R orders within each group.

Errors

Returns DbErr::Driver when the query fails or a row cannot be decoded.

Trait Implementations

impl<E: Clone + EntityTrait, R: Clone + EntityTrait> Clone for SelectTwoMany<E, R>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<E: Debug + EntityTrait, R: Debug + EntityTrait> Debug for SelectTwoMany<E, R>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.