[−][src]Struct webapp::schema::sessions::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 AppearsOnTable<table> for star[src]
impl Clone for star[src]
impl Copy for star[src]
impl Debug for star[src]
impl Expression for star[src]
impl<DB: Backend> QueryFragment<DB> for star where
<table as QuerySource>::FromClause: QueryFragment<DB>, [src]
<table as QuerySource>::FromClause: QueryFragment<DB>,
fn walk_ast(&self, out: AstPass<'_, DB>) -> QueryResult<()>[src]
fn to_sql(&self, out: &mut <DB as Backend>::QueryBuilder) -> Result<(), Error>
fn collect_binds(
&self,
out: &mut <DB as Backend>::BindCollector,
metadata_lookup: &<DB as TypeMetadata>::MetadataLookup
) -> Result<(), Error>
&self,
out: &mut <DB as Backend>::BindCollector,
metadata_lookup: &<DB as TypeMetadata>::MetadataLookup
) -> Result<(), Error>
fn is_safe_to_cache_prepared(&self) -> Result<bool, Error>
impl SelectableExpression<table> for star[src]
Auto Trait Implementations
impl RefUnwindSafe for star
impl Send for star
impl Sync for star
impl Unpin for star
impl UnwindSafe for star
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T> IntoSql for T
fn into_sql<T>(self) -> Self::Expression where
Self: AsExpression<T>,
Self: AsExpression<T>,
fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression where
&'a Self: AsExpression<T>,
&'a Self: AsExpression<T>,
impl<T> NullableExpressionMethods for T where
T: Expression,
T: Expression,
fn nullable(self) -> Nullable<Self>
impl<T> PgExpressionMethods for T where
T: Expression,
T: Expression,
fn is_not_distinct_from<T>(
self,
other: T
) -> IsNotDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression> where
T: AsExpression<Self::SqlType>,
self,
other: T
) -> IsNotDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression> where
T: AsExpression<Self::SqlType>,
fn is_distinct_from<T>(
self,
other: T
) -> IsDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression> where
T: AsExpression<Self::SqlType>,
self,
other: T
) -> IsDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression> where
T: AsExpression<Self::SqlType>,
impl<T> ToOwned for T where
T: Clone, [src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T[src]
pub fn clone_into(&self, target: &mut T)[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,