pub struct today;
Expand description
Represents the SQL CURRENT_DATE
constant.
Trait Implementations§
source§impl AsExpression<Nullable<Date>> for today
impl AsExpression<Nullable<Date>> for today
source§fn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
source§impl Expression for today
impl Expression for today
source§impl<DB: Backend> QueryFragment<DB> for today
impl<DB: Backend> QueryFragment<DB> for today
source§fn walk_ast<'b>(&'b self, out: AstPass<'_, 'b, DB>) -> QueryResult<()>
fn walk_ast<'b>(&'b self, out: AstPass<'_, 'b, DB>) -> QueryResult<()>
Walk over this
QueryFragment
for all passes. Read moresource§fn to_sql(&self, out: &mut DB::QueryBuilder, backend: &DB) -> QueryResult<()>
fn to_sql(&self, out: &mut DB::QueryBuilder, backend: &DB) -> QueryResult<()>
Available on crate feature
i-implement-a-third-party-backend-and-opt-into-breaking-changes
only.Converts this
QueryFragment
to its SQL representation. Read moresource§fn collect_binds<'b>(
&'b self,
out: &mut DB::BindCollector<'b>,
metadata_lookup: &mut DB::MetadataLookup,
backend: &'b DB,
) -> QueryResult<()>
fn collect_binds<'b>( &'b self, out: &mut DB::BindCollector<'b>, metadata_lookup: &mut DB::MetadataLookup, backend: &'b DB, ) -> QueryResult<()>
Available on crate feature
i-implement-a-third-party-backend-and-opt-into-breaking-changes
only.Serializes all bind parameters in this query. Read more
source§fn is_safe_to_cache_prepared(&self, backend: &DB) -> QueryResult<bool>
fn is_safe_to_cache_prepared(&self, backend: &DB) -> QueryResult<bool>
Available on crate feature
i-implement-a-third-party-backend-and-opt-into-breaking-changes
only.Is this query safe to store in the prepared statement cache? Read more
source§impl QueryId for today
impl QueryId for today
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<__GroupByClause> ValidGrouping<__GroupByClause> for today
impl<__GroupByClause> ValidGrouping<__GroupByClause> for today
source§type IsAggregate = Never
type IsAggregate = Never
Is this expression aggregate? Read more
impl<QS> AppearsOnTable<QS> for todaywhere
today: Expression,
impl Copy for today
impl<QS> SelectableExpression<QS> for todaywhere
today: AppearsOnTable<QS>,
Auto Trait Implementations§
impl Freeze for today
impl RefUnwindSafe for today
impl Send for today
impl Sync for today
impl Unpin for today
impl UnwindSafe for today
Blanket Implementations§
source§impl<T, ST> AsExpression<ST> for T
impl<T, ST> AsExpression<ST> for T
source§type Expression = T
type Expression = T
The expression being returned
source§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
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<Conn, DB, T> ExecuteDsl<Conn, DB> for T
impl<Conn, DB, T> ExecuteDsl<Conn, DB> for T
source§impl<T> ExpressionMethods for T
impl<T> ExpressionMethods for T
source§fn is_not_null(self) -> IsNotNull<Self>
fn is_not_null(self) -> IsNotNull<Self>
Creates a SQL
IS NOT NULL
expression. Read moresource§fn between<T, U>(self, lower: T, upper: U) -> Between<Self, T, U>
fn between<T, U>(self, lower: T, upper: U) -> Between<Self, T, U>
Creates a SQL
BETWEEN
expression using the given lower and upper
bounds. Read moresource§fn not_between<T, U>(self, lower: T, upper: U) -> NotBetween<Self, T, U>
fn not_between<T, U>(self, lower: T, upper: U) -> NotBetween<Self, T, U>
Creates a SQL
NOT BETWEEN
expression using the given lower and upper
bounds. Read moresource§impl<T> IntoSql for T
impl<T> IntoSql for T
source§impl<T> NullableExpressionMethods for Twhere
T: Expression,
impl<T> NullableExpressionMethods for Twhere
T: Expression,
source§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
source§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 moresource§impl<T> PgExpressionMethods for Twhere
T: Expression,
impl<T> PgExpressionMethods for Twhere
T: Expression,
source§fn is_not_distinct_from<T>(self, other: T) -> IsNotDistinctFrom<Self, T>
fn is_not_distinct_from<T>(self, other: T) -> IsNotDistinctFrom<Self, T>
Available on crate feature
postgres_backend
only.Creates a PostgreSQL
IS NOT DISTINCT FROM
expression. Read moresource§fn is_distinct_from<T>(self, other: T) -> IsDistinctFrom<Self, T>
fn is_distinct_from<T>(self, other: T) -> IsDistinctFrom<Self, T>
Available on crate feature
postgres_backend
only.Creates a PostgreSQL
IS DISTINCT FROM
expression. Read moresource§impl<T> PgTimestampExpressionMethods for T
impl<T> PgTimestampExpressionMethods for T
source§fn at_time_zone<T>(self, timezone: T) -> AtTimeZone<Self, T>where
T: AsExpression<VarChar>,
fn at_time_zone<T>(self, timezone: T) -> AtTimeZone<Self, T>where
T: AsExpression<VarChar>,
Available on crate feature
postgres_backend
only.Creates a PostgreSQL “AT TIME ZONE” expression. Read more