[−]Struct raspberry_web::schema::allowed_states::columns::star
Represents table_name.*, which is sometimes needed for
efficient count queries. It cannot be used in place of
all_columns, and has a SqlType of () to prevent it
being used that way
Trait Implementations
impl Copy for star
impl Clone for star
fn clone(&self) -> star
default fn clone_from(&mut self, source: &Self)1.0.0[src]
Performs copy-assignment from source. Read more
impl Debug for star
impl SelectableExpression<table> for star
impl Expression for star
impl AppearsOnTable<table> for star
impl<DB: Backend> QueryFragment<DB> for star where
<table as QuerySource>::FromClause: QueryFragment<DB>,
<table as QuerySource>::FromClause: QueryFragment<DB>,
fn walk_ast(&self, out: AstPass<DB>) -> QueryResult<()>
default fn to_sql(
&self,
out: &mut <DB as Backend>::QueryBuilder
) -> Result<(), Error>[src]
&self,
out: &mut <DB as Backend>::QueryBuilder
) -> Result<(), Error>
Converts this QueryFragment to its SQL representation. Read more
default fn collect_binds(
&self,
out: &mut <DB as Backend>::BindCollector,
metadata_lookup: &<DB as TypeMetadata>::MetadataLookup
) -> Result<(), Error>[src]
&self,
out: &mut <DB as Backend>::BindCollector,
metadata_lookup: &<DB as TypeMetadata>::MetadataLookup
) -> Result<(), Error>
Serializes all bind parameters in this query. Read more
default fn is_safe_to_cache_prepared(&self) -> Result<bool, Error>[src]
Is this query safe to store in the prepared statement cache? Read more
Auto Trait Implementations
Blanket Implementations
impl<T> ToOwned for T where
T: Clone, [src]
T: Clone,
impl<T> From for T[src]
impl<T, U> Into for T where
U: From<T>, [src]
U: From<T>,
impl<T, U> TryFrom for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T> Borrow for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized, [src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T[src]
impl<T, U> TryInto for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
impl<T> IntoSql for T[src]
default fn into_sql<T>(self) -> Self::Expression where
Self: AsExpression<T>, [src]
Self: AsExpression<T>,
Convert self to an expression for Diesel's query builder. Read more
default fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression where
&'a Self: AsExpression<T>, [src]
&'a Self: AsExpression<T>,
Convert &self to an expression for Diesel's query builder. Read more
impl<T> NullableExpressionMethods for T where
T: Expression, [src]
T: Expression,
default fn nullable(self) -> Nullable<Self>[src]
Converts this potentially non-null expression into one which is treated as nullable. This method has no impact on the generated SQL, and is only used to allow certain comparisons that would otherwise fail to compile. Read more