Struct vit_servicing_station_lib::db::schema::community_advisors_reviews::columns::star
source · 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(&self, out: AstPass<'_, DB>) -> QueryResult<()>
fn walk_ast(&self, out: AstPass<'_, DB>) -> QueryResult<()>
Walk over this
QueryFragment
for all passes. Read more§fn to_sql(&self, out: &mut <DB as Backend>::QueryBuilder) -> Result<(), Error>
fn to_sql(&self, out: &mut <DB as Backend>::QueryBuilder) -> Result<(), Error>
Converts this
QueryFragment
to its SQL representation. Read more§fn collect_binds(
&self,
out: &mut <DB as Backend>::BindCollector,
metadata_lookup: &<DB as TypeMetadata>::MetadataLookup
) -> Result<(), Error>
fn collect_binds( &self, out: &mut <DB as Backend>::BindCollector, metadata_lookup: &<DB as TypeMetadata>::MetadataLookup ) -> Result<(), Error>
Serializes all bind parameters in this query. Read more
§fn is_safe_to_cache_prepared(&self) -> Result<bool, Error>
fn is_safe_to_cache_prepared(&self) -> Result<bool, Error>
Is this query safe to store in the prepared statement cache? Read more
impl AppearsOnTable<table> for star
impl Copy for star
impl SelectableExpression<table> for star
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> AsExpression<<T as Expression>::SqlType> for Twhere
T: Expression,
impl<T> AsExpression<<T as Expression>::SqlType> for Twhere T: Expression,
§type Expression = T
type Expression = T
The expression being returned
§fn as_expression(self) -> T
fn as_expression(self) -> T
Perform the conversion
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
§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,
§impl<T> PgExpressionMethods for Twhere
T: Expression,
impl<T> PgExpressionMethods for Twhere T: Expression,
§fn is_not_distinct_from<T>(
self,
other: T
) -> IsNotDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression>where
T: AsExpression<Self::SqlType>,
fn is_not_distinct_from<T>( self, other: T ) -> IsNotDistinctFrom<Self, <T as AsExpression<Self::SqlType>>::Expression>where T: AsExpression<Self::SqlType>,
Creates a PostgreSQL
IS NOT DISTINCT FROM
expression. Read more§fn is_distinct_from<T>(
self,
other: T
) -> IsDistinctFrom<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>,
Creates a PostgreSQL
IS DISTINCT FROM
expression. Read more