Struct Derived 

pub struct Derived<'a, V: SQLParam, Name, Projection, Query> { /* private fields */ }

A complete query used as a named source in another query.

Implementations

impl<'a, V, Name, Projection, Query> Derived<'a, V, Name, Projection, Query>

where V: SQLParam, Name: Tag, Projection: DerivedProjection<Name>,

pub const fn query(&self) -> &Query

Returns the underlying query.

pub fn into_query(self) -> Query

Returns the underlying query by value.

pub fn fields(&self) -> Projection::Fields

where Name: Tag, Projection: DerivedProjection<Name>,

Returns typed fields qualified by this source’s name.

Trait Implementations

impl<'a, V: SQLParam, Name, Projection, Query: Clone> Clone for Derived<'a, V, Name, Projection, Query>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, V, Name, Output, Projection, Query> ColumnOf<Derived<'a, V, Name, Projection, Query>> for DerivedField<Name, Output>

where V: SQLParam,

impl<'a, V, Name, Projection, Query> HasSelectModel for Derived<'a, V, Name, Projection, Query>

where V: SQLParam, Name: Tag, Projection: DerivedProjection<Name>,

const COLUMN_COUNT: usize = Projection::COLUMN_COUNT

type SelectModel = <Projection as DerivedProjection<Name>>::Row

impl<'a, V, Name, Projection, Query> ToSQL<'a, V> for Derived<'a, V, Name, Projection, Query>

where V: SQLParam, Name: Tag, Query: ToSQL<'a, V>,

fn to_sql(&self) -> SQL<'a, V>

fn into_sql(self) -> SQL<'a, V>

Consume self and return SQL without cloning. Default delegates to to_sql() (which clones). Types that own their SQL (like SQL and SQLExpr) override this to avoid the clone.