Struct AliasKey 

pub struct AliasKey<Tag>(/* private fields */);

Key of a source that SQL refers to by an alias name. Tag is the alias’s type-level name.

Trait Implementations

impl<Tag> Clone for AliasKey<Tag>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Tag> Copy for AliasKey<Tag>

impl<Tag> Debug for AliasKey<Tag>

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

Formats the value using the given formatter.

impl<Tag> Default for AliasKey<Tag>

fn default() -> Self

Returns the “default value” for a type.

impl<Tag, Head, Tail> ScopeContains<AliasKey<Tag>, ScopeHere> for Cons<Head, Tail>

where Head: ScopeEntry<Key = AliasKey<Tag>>,

type Nullable = <Head as ScopeEntry>::Nullable

Null when the found source is on the nullable side of an outer join.

impl<Tag, Head, Tail, Witness> ScopeContains<AliasKey<Tag>, ScopeThere<Witness>> for Cons<Head, Tail>

where Tail: ScopeContains<AliasKey<Tag>, Witness>,

type Nullable = <Tail as ScopeContains<AliasKey<Tag>, Witness>>::Nullable

Null when the found source is on the nullable side of an outer join.

impl<Tag> ScopeEntry for AliasKey<Tag>

type Key = AliasKey<Tag>

How columns refer to this source: a TableKey or an AliasKey.

type Nullable = NonNull

Null when an outer join can leave this source NULL.

type Sources = ()

Sources this source reads itself, such as the tables a derived table’s subquery reads from an outer query. They resolve against the enclosing query (or, for a LATERAL join, the sources joined before it). Tables and views read nothing (()).