teacherapi::schema::lesson_feedback::columns

Struct updt

pub struct updt;

Trait Implementations§

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impl<Rhs> Add<Rhs> for updt
where Rhs: AsExpression<<<updt as Expression>::SqlType as Add>::Rhs>,

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type Output = Add<updt, <Rhs as AsExpression<<<updt as Expression>::SqlType as Add>::Rhs>>::Expression>

The resulting type after applying the + operator.
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fn add(self, rhs: Rhs) -> Self::Output

Performs the + operation. Read more
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impl Clone for updt

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fn clone(&self) -> updt

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Column for updt

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const NAME: &'static str = "updt"

The name of this column
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type Table = table

The table which this column belongs to
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impl Debug for updt

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for updt

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fn default() -> updt

Returns the “default value” for a type. Read more
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impl Expression for updt

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type SqlType = Nullable<Timestamp>

The type that this expression represents in SQL
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impl<DB> QueryFragment<DB> for updt
where DB: Backend, <table as QuerySource>::FromClause: QueryFragment<DB>,

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fn walk_ast(&self, out: AstPass<'_, DB>) -> QueryResult<()>

Walk over this QueryFragment for all passes. Read more
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fn to_sql(&self, out: &mut <DB as Backend>::QueryBuilder) -> Result<(), Error>

Converts this QueryFragment to its SQL representation. Read more
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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
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fn is_safe_to_cache_prepared(&self) -> Result<bool, Error>

Is this query safe to store in the prepared statement cache? Read more
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impl QueryId for updt

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const HAS_STATIC_QUERY_ID: bool = true

Can the SQL generated by Self be uniquely identified by its type? Read more
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type QueryId = updt

A type which uniquely represents Self in a SQL query. Read more
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fn query_id() -> Option<TypeId>

Returns the type id of Self::QueryId if Self::HAS_STATIC_QUERY_ID. Returns None otherwise. Read more
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impl<Rhs> Sub<Rhs> for updt
where Rhs: AsExpression<<<updt as Expression>::SqlType as Sub>::Rhs>,

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type Output = Sub<updt, <Rhs as AsExpression<<<updt as Expression>::SqlType as Sub>::Rhs>>::Expression>

The resulting type after applying the - operator.
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fn sub(self, rhs: Rhs) -> Self::Output

Performs the - operation. Read more
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impl<QS> AppearsOnTable<QS> for updt
where QS: AppearsInFromClause<table, Count = Once>,

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impl Copy for updt

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impl NonAggregate for updt

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impl SelectableExpression<table> for updt

Auto Trait Implementations§

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impl Freeze for updt

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impl RefUnwindSafe for updt

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impl Send for updt

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impl Sync for updt

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impl Unpin for updt

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impl UnwindSafe for updt

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<Src, Scheme> ApproxFrom<Src, Scheme> for Src
where Scheme: ApproxScheme,

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type Err = NoError

The error type produced by a failed conversion.
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fn approx_from(src: Src) -> Result<Src, <Src as ApproxFrom<Src, Scheme>>::Err>

Convert the given value into an approximately equivalent representation.
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impl<Dst, Src, Scheme> ApproxInto<Dst, Scheme> for Src
where Dst: ApproxFrom<Src, Scheme>, Scheme: ApproxScheme,

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type Err = <Dst as ApproxFrom<Src, Scheme>>::Err

The error type produced by a failed conversion.
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fn approx_into(self) -> Result<Dst, <Src as ApproxInto<Dst, Scheme>>::Err>

Convert the subject into an approximately equivalent representation.
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impl<T> AsExpression<<T as Expression>::SqlType> for T
where T: Expression,

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type Expression = T

The expression being returned
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fn as_expression(self) -> T

Perform the conversion
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T, Dst> ConvAsUtil<Dst> for T

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fn approx(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Approximate the subject with the default scheme.
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fn approx_by<Scheme>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Approximate the subject with a specific scheme.
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impl<T> ConvUtil for T

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fn approx_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Approximate the subject to a given type with the default scheme.
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fn approx_as_by<Dst, Scheme>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Approximate the subject to a given type with a specific scheme.
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fn into_as<Dst>(self) -> Dst
where Self: Sized + Into<Dst>,

Convert the subject to a given type.
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fn try_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + TryInto<Dst>,

Attempt to convert the subject to a given type.
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fn value_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + ValueInto<Dst>,

Attempt a value conversion of the subject to a given type.
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impl<Conn, DB, T> ExecuteDsl<Conn, DB> for T
where Conn: Connection<Backend = DB>, DB: Backend, T: QueryFragment<DB> + QueryId,

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fn execute(query: T, conn: &Conn) -> Result<usize, Error>

Execute this command
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impl<T> ExpressionMethods for T
where T: Expression, <T as Expression>::SqlType: SingleValue,

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fn eq<T>( self, other: T, ) -> Eq<Self, <T as AsExpression<Self::SqlType>>::Expression>
where T: AsExpression<Self::SqlType>,

Creates a SQL = expression. Read more
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fn ne<T>( self, other: T, ) -> NotEq<Self, <T as AsExpression<Self::SqlType>>::Expression>
where T: AsExpression<Self::SqlType>,

Creates a SQL != expression. Read more
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fn eq_any<T>( self, values: T, ) -> In<Self, <T as AsInExpression<Self::SqlType>>::InExpression>
where T: AsInExpression<Self::SqlType>,

Creates a SQL IN statement. Read more
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fn ne_any<T>( self, values: T, ) -> NotIn<Self, <T as AsInExpression<Self::SqlType>>::InExpression>
where T: AsInExpression<Self::SqlType>,

👎Deprecated since 1.2.0: use ne_all instead
Deprecated alias for ne_all Read more
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fn ne_all<T>( self, values: T, ) -> NotIn<Self, <T as AsInExpression<Self::SqlType>>::InExpression>
where T: AsInExpression<Self::SqlType>,

Creates a SQL NOT IN statement. Read more
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fn is_null(self) -> IsNull<Self>

Creates a SQL IS NULL expression. Read more
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fn is_not_null(self) -> IsNotNull<Self>

Creates a SQL IS NOT NULL expression. Read more
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fn gt<T>( self, other: T, ) -> Gt<Self, <T as AsExpression<Self::SqlType>>::Expression>
where T: AsExpression<Self::SqlType>,

Creates a SQL > expression. Read more
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fn ge<T>( self, other: T, ) -> GtEq<Self, <T as AsExpression<Self::SqlType>>::Expression>
where T: AsExpression<Self::SqlType>,

Creates a SQL >= expression. Read more
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fn lt<T>( self, other: T, ) -> Lt<Self, <T as AsExpression<Self::SqlType>>::Expression>
where T: AsExpression<Self::SqlType>,

Creates a SQL < expression. Read more
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fn le<T>( self, other: T, ) -> LtEq<Self, <T as AsExpression<Self::SqlType>>::Expression>
where T: AsExpression<Self::SqlType>,

Creates a SQL <= expression. Read more
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fn between<T, U>( self, lower: T, upper: U, ) -> Between<Self, And<<T as AsExpression<Self::SqlType>>::Expression, <U as AsExpression<Self::SqlType>>::Expression>>
where T: AsExpression<Self::SqlType>, U: AsExpression<Self::SqlType>,

Creates a SQL BETWEEN expression using the given lower and upper bounds. Read more
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fn not_between<T, U>( self, lower: T, upper: U, ) -> NotBetween<Self, And<<T as AsExpression<Self::SqlType>>::Expression, <U as AsExpression<Self::SqlType>>::Expression>>
where T: AsExpression<Self::SqlType>, U: AsExpression<Self::SqlType>,

Creates a SQL NOT BETWEEN expression using the given lower and upper bounds. Read more
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fn desc(self) -> Desc<Self>

Creates a SQL DESC expression, representing this expression in descending order. Read more
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fn asc(self) -> Asc<Self>

Creates a SQL ASC expression, representing this expression in ascending order. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> IntoSql for T

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fn into_sql<T>(self) -> Self::Expression
where Self: Sized + AsExpression<T>,

Convert self to an expression for Diesel’s query builder. Read more
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fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression
where &'a Self: AsExpression<T>,

Convert &self to an expression for Diesel’s query builder. Read more
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impl<T> NullableExpressionMethods for T
where T: Expression,

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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
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impl<T> PgExpressionMethods for T
where T: Expression,

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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
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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
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<R, P> ReadPrimitive<R> for P
where R: Read + ReadEndian<P>, P: Default,

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fn read_from_little_endian(read: &mut R) -> Result<Self, Error>

Read this value from the supplied reader. Same as ReadEndian::read_from_little_endian().
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fn read_from_big_endian(read: &mut R) -> Result<Self, Error>

Read this value from the supplied reader. Same as ReadEndian::read_from_big_endian().
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fn read_from_native_endian(read: &mut R) -> Result<Self, Error>

Read this value from the supplied reader. Same as ReadEndian::read_from_native_endian().
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

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fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
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fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<Src> TryFrom<Src> for Src

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type Err = NoError

The error type produced by a failed conversion.
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fn try_from(src: Src) -> Result<Src, <Src as TryFrom<Src>>::Err>

Convert the given value into the subject type.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<Src, Dst> TryInto<Dst> for Src
where Dst: TryFrom<Src>,

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type Err = <Dst as TryFrom<Src>>::Err

The error type produced by a failed conversion.
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fn try_into(self) -> Result<Dst, <Src as TryInto<Dst>>::Err>

Convert the subject into the destination type.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<Src> ValueFrom<Src> for Src

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type Err = NoError

The error type produced by a failed conversion.
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fn value_from(src: Src) -> Result<Src, <Src as ValueFrom<Src>>::Err>

Convert the given value into an exactly equivalent representation.
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impl<Src, Dst> ValueInto<Dst> for Src
where Dst: ValueFrom<Src>,

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type Err = <Dst as ValueFrom<Src>>::Err

The error type produced by a failed conversion.
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fn value_into(self) -> Result<Dst, <Src as ValueInto<Dst>>::Err>

Convert the subject into an exactly equivalent representation.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<QS, T, DB> BoxableExpression<QS, DB> for T
where DB: Backend, T: Expression + SelectableExpression<QS> + NonAggregate + QueryFragment<DB>,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T