pub struct star;Expand description
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§
Source§impl<DB: Backend> QueryFragment<DB> for starwhere
<table as QuerySource>::FromClause: QueryFragment<DB>,
impl<DB: Backend> QueryFragment<DB> for starwhere
<table as QuerySource>::FromClause: QueryFragment<DB>,
Source§fn walk_ast<'b>(
&'b self,
__diesel_internal_out: AstPass<'_, 'b, DB>,
) -> QueryResult<()>
fn walk_ast<'b>( &'b self, __diesel_internal_out: AstPass<'_, 'b, DB>, ) -> QueryResult<()>
Walk over this
QueryFragment for all passes. Read more§fn to_sql(
&self,
out: &mut <DB as Backend>::QueryBuilder,
backend: &DB,
) -> Result<(), Error>
fn to_sql( &self, out: &mut <DB as Backend>::QueryBuilder, backend: &DB, ) -> Result<(), Error>
Converts this
QueryFragment to its SQL representation. Read more§fn collect_binds<'b>(
&'b self,
out: &mut <DB as Backend>::BindCollector<'b>,
metadata_lookup: &mut <DB as TypeMetadata>::MetadataLookup,
backend: &'b DB,
) -> Result<(), Error>
fn collect_binds<'b>( &'b self, out: &mut <DB as Backend>::BindCollector<'b>, metadata_lookup: &mut <DB as TypeMetadata>::MetadataLookup, backend: &'b DB, ) -> Result<(), Error>
Serializes all bind parameters in this query. Read more
Source§impl QueryId for star
impl QueryId for star
Source§const HAS_STATIC_QUERY_ID: bool = true
const HAS_STATIC_QUERY_ID: bool = true
Can the SQL generated by
Self be uniquely identified by its type? Read moreSource§impl<__GB> ValidGrouping<__GB> for starwhere
(pipeline, epoch_hi_inclusive, checkpoint_hi_inclusive, tx_hi, timestamp_ms_hi_inclusive, reader_lo, pruner_timestamp, pruner_hi, chain_id): ValidGrouping<__GB>,
impl<__GB> ValidGrouping<__GB> for starwhere
(pipeline, epoch_hi_inclusive, checkpoint_hi_inclusive, tx_hi, timestamp_ms_hi_inclusive, reader_lo, pruner_timestamp, pruner_hi, chain_id): ValidGrouping<__GB>,
Source§type IsAggregate = <(pipeline, epoch_hi_inclusive, checkpoint_hi_inclusive, tx_hi, timestamp_ms_hi_inclusive, reader_lo, pruner_timestamp, pruner_hi, chain_id) as ValidGrouping<__GB>>::IsAggregate
type IsAggregate = <(pipeline, epoch_hi_inclusive, checkpoint_hi_inclusive, tx_hi, timestamp_ms_hi_inclusive, reader_lo, pruner_timestamp, pruner_hi, chain_id) as ValidGrouping<__GB>>::IsAggregate
Is this expression aggregate? Read more
impl AppearsOnTable<table> for star
impl Copy for star
impl SelectableExpression<table> for star
Auto Trait Implementations§
impl Freeze for star
impl RefUnwindSafe for star
impl Send for star
impl Sync for star
impl Unpin for star
impl UnsafeUnpin for star
impl UnwindSafe for star
Blanket Implementations§
§impl<T> AggregateExpressionMethods for T
impl<T> AggregateExpressionMethods for T
§fn aggregate_distinct(self) -> Self::Outputwhere
Self: DistinctDsl,
fn aggregate_distinct(self) -> Self::Outputwhere
Self: DistinctDsl,
DISTINCT modifier for aggregate functions Read more§fn aggregate_all(self) -> Self::Outputwhere
Self: AllDsl,
fn aggregate_all(self) -> Self::Outputwhere
Self: AllDsl,
ALL modifier for aggregate functions Read more§fn aggregate_filter<P>(self, f: P) -> Self::Outputwhere
P: AsExpression<Bool>,
Self: FilterDsl<<P as AsExpression<Bool>>::Expression>,
fn aggregate_filter<P>(self, f: P) -> Self::Outputwhere
P: AsExpression<Bool>,
Self: FilterDsl<<P as AsExpression<Bool>>::Expression>,
Add an aggregate function filter Read more
§fn aggregate_order<O>(self, o: O) -> Self::Outputwhere
Self: OrderAggregateDsl<O>,
fn aggregate_order<O>(self, o: O) -> Self::Outputwhere
Self: OrderAggregateDsl<O>,
Add an aggregate function order Read more
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
Converts
Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be
downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Converts
Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further
downcast into Rc<ConcreteType> where ConcreteType implements Trait.§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Converts
&Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &Any’s vtable from &Trait’s.§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Converts
&mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &mut Any’s vtable from &mut Trait’s.§impl<T> DowncastSend for T
impl<T> DowncastSend for T
§impl<T> DowncastSync for T
impl<T> DowncastSync for T
§impl<Conn, DB, T> ExecuteDsl<Conn, DB> for Twhere
Conn: Connection<Backend = DB>,
DB: Backend,
T: QueryFragment<DB> + QueryId,
impl<Conn, DB, T> ExecuteDsl<Conn, DB> for Twhere
Conn: Connection<Backend = DB>,
DB: Backend,
T: QueryFragment<DB> + QueryId,
§impl<Conn, DB, T> ExecuteDsl<Conn, DB> for Twhere
Conn: AsyncConnectionCore<Backend = DB>,
DB: Backend,
T: QueryFragment<DB> + QueryId + Send,
impl<Conn, DB, T> ExecuteDsl<Conn, DB> for Twhere
Conn: AsyncConnectionCore<Backend = DB>,
DB: Backend,
T: QueryFragment<DB> + QueryId + Send,
§fn execute<'conn, 'query>(
query: T,
conn: &'conn mut Conn,
) -> <Conn as AsyncConnectionCore>::ExecuteFuture<'conn, 'query>where
T: 'query,
fn execute<'conn, 'query>(
query: T,
conn: &'conn mut Conn,
) -> <Conn as AsyncConnectionCore>::ExecuteFuture<'conn, 'query>where
T: 'query,
Execute this command
§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
§impl<T> IntoSql for T
impl<T> IntoSql for T
§impl<T> NullableExpressionMethods for Twhere
T: Expression,
impl<T> NullableExpressionMethods for Twhere
T: Expression,
§fn nullable(self) -> Nullable<Self>
fn nullable(self) -> Nullable<Self>
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
§fn assume_not_null(self) -> AssumeNotNull<Self>
fn assume_not_null(self) -> AssumeNotNull<Self>
Converts this potentially nullable expression into one which will be assumed
to be not-null. This method has no impact on the generated SQL, however it will
enable you to attempt deserialization of the returned value in a non-
Option. Read more§impl<T> PgExpressionMethods for Twhere
T: Expression,
impl<T> PgExpressionMethods for Twhere
T: Expression,
§fn is_not_distinct_from<T>(
self,
other: T,
) -> Grouped<IsNotDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression>>where
Self::SqlType: SqlType,
T: AsExpression<Self::SqlType>,
fn is_not_distinct_from<T>(
self,
other: T,
) -> Grouped<IsNotDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression>>where
Self::SqlType: SqlType,
T: AsExpression<Self::SqlType>,
Creates a PostgreSQL
IS NOT DISTINCT FROM expression. Read more§fn is_distinct_from<T>(
self,
other: T,
) -> Grouped<IsDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression>>where
Self::SqlType: SqlType,
T: AsExpression<Self::SqlType>,
fn is_distinct_from<T>(
self,
other: T,
) -> Grouped<IsDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression>>where
Self::SqlType: SqlType,
T: AsExpression<Self::SqlType>,
Creates a PostgreSQL
IS DISTINCT FROM expression. Read more§fn is_contained_by_range<T>(
self,
other: T,
) -> Grouped<IsContainedBy<Self, <T as AsExpression<Range<Self::SqlType>>>::Expression>>where
Self::SqlType: SqlType,
T: AsExpression<Range<Self::SqlType>>,
fn is_contained_by_range<T>(
self,
other: T,
) -> Grouped<IsContainedBy<Self, <T as AsExpression<Range<Self::SqlType>>>::Expression>>where
Self::SqlType: SqlType,
T: AsExpression<Range<Self::SqlType>>,
Creates a PostgreSQL
<@ expression. Read more§impl<T, DB> QueryFragmentForCachedStatement<DB> for Twhere
DB: Backend,
<DB as Backend>::QueryBuilder: Default,
T: QueryFragment<DB>,
impl<T, DB> QueryFragmentForCachedStatement<DB> for Twhere
DB: Backend,
<DB as Backend>::QueryBuilder: Default,
T: QueryFragment<DB>,
§fn construct_sql(&self, backend: &DB) -> Result<String, Error>
fn construct_sql(&self, backend: &DB) -> Result<String, Error>
Convert the query fragment into a SQL string for the given backend
§fn is_safe_to_cache_prepared(&self, backend: &DB) -> Result<bool, Error>
fn is_safe_to_cache_prepared(&self, backend: &DB) -> Result<bool, Error>
Check whether it’s safe to cache the query
§impl<T, Conn> RunQueryDsl<Conn> for T
impl<T, Conn> RunQueryDsl<Conn> for T
§fn execute<'conn, 'query>(
self,
conn: &'conn mut Conn,
) -> <Conn as AsyncConnectionCore>::ExecuteFuture<'conn, 'query>where
Conn: AsyncConnectionCore + Send,
Self: ExecuteDsl<Conn> + 'query,
fn execute<'conn, 'query>(
self,
conn: &'conn mut Conn,
) -> <Conn as AsyncConnectionCore>::ExecuteFuture<'conn, 'query>where
Conn: AsyncConnectionCore + Send,
Self: ExecuteDsl<Conn> + 'query,
Executes the given command, returning the number of rows affected. Read more
§fn load<'query, 'conn, U>(
self,
conn: &'conn mut Conn,
) -> AndThen<Self::LoadFuture<'conn>, TryCollect<Self::Stream<'conn>, Vec<U>>>where
U: Send,
Conn: AsyncConnectionCore,
Self: LoadQuery<'query, Conn, U> + 'query,
fn load<'query, 'conn, U>(
self,
conn: &'conn mut Conn,
) -> AndThen<Self::LoadFuture<'conn>, TryCollect<Self::Stream<'conn>, Vec<U>>>where
U: Send,
Conn: AsyncConnectionCore,
Self: LoadQuery<'query, Conn, U> + 'query,
§fn load_stream<'conn, 'query, U>(
self,
conn: &'conn mut Conn,
) -> Self::LoadFuture<'conn>where
Conn: AsyncConnectionCore,
U: 'conn,
Self: LoadQuery<'query, Conn, U> + 'query,
fn load_stream<'conn, 'query, U>(
self,
conn: &'conn mut Conn,
) -> Self::LoadFuture<'conn>where
Conn: AsyncConnectionCore,
U: 'conn,
Self: LoadQuery<'query, Conn, U> + 'query,
Executes the given query, returning a [
Stream] with the returned rows. Read more§fn get_result<'query, 'conn, U>(
self,
conn: &'conn mut Conn,
) -> AndThen<Self::LoadFuture<'conn>, LoadNext<Pin<Box<Self::Stream<'conn>>>>>where
U: Send + 'conn,
Conn: AsyncConnectionCore,
Self: LoadQuery<'query, Conn, U> + 'query,
fn get_result<'query, 'conn, U>(
self,
conn: &'conn mut Conn,
) -> AndThen<Self::LoadFuture<'conn>, LoadNext<Pin<Box<Self::Stream<'conn>>>>>where
U: Send + 'conn,
Conn: AsyncConnectionCore,
Self: LoadQuery<'query, Conn, U> + 'query,
Runs the command, and returns the affected row. Read more
§fn get_results<'query, 'conn, U>(
self,
conn: &'conn mut Conn,
) -> AndThen<Self::LoadFuture<'conn>, TryCollect<Self::Stream<'conn>, Vec<U>>>where
U: Send,
Conn: AsyncConnectionCore,
Self: LoadQuery<'query, Conn, U> + 'query,
fn get_results<'query, 'conn, U>(
self,
conn: &'conn mut Conn,
) -> AndThen<Self::LoadFuture<'conn>, TryCollect<Self::Stream<'conn>, Vec<U>>>where
U: Send,
Conn: AsyncConnectionCore,
Self: LoadQuery<'query, Conn, U> + 'query,
Runs the command, returning an
Vec with the affected rows. Read more§impl<T> WindowExpressionMethods for T
impl<T> WindowExpressionMethods for T
§fn over(self) -> Self::Outputwhere
Self: OverDsl,
fn over(self) -> Self::Outputwhere
Self: OverDsl,
Turn a function call into a window function call Read more
§fn window_filter<P>(self, f: P) -> Self::Outputwhere
P: AsExpression<Bool>,
Self: FilterDsl<<P as AsExpression<Bool>>::Expression>,
fn window_filter<P>(self, f: P) -> Self::Outputwhere
P: AsExpression<Bool>,
Self: FilterDsl<<P as AsExpression<Bool>>::Expression>,
Add a filter to the current window function Read more
§fn partition_by<E>(self, expr: E) -> Self::Outputwhere
Self: PartitionByDsl<E>,
fn partition_by<E>(self, expr: E) -> Self::Outputwhere
Self: PartitionByDsl<E>,
Add a partition clause to the current window function Read more
§fn window_order<E>(self, expr: E) -> Self::Outputwhere
Self: OrderWindowDsl<E>,
fn window_order<E>(self, expr: E) -> Self::Outputwhere
Self: OrderWindowDsl<E>,
Add a order clause to the current window function Read more