Struct backend::schema::maps::columns::modified_at

pub struct modified_at;

Trait Implementations

impl<Rhs> Add<Rhs> for modified_atwhere Rhs: AsExpression<<<modified_at as Expression>::SqlType as Add>::Rhs>,

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

The resulting type after applying the + operator.

fn add(self, __diesel_internal_rhs: Rhs) -> Self::Output

Performs the + operation.

impl AppearsInFromClause<Only<table>> for modified_at

type Count = Once

How many times does Self appear in QS?

impl Clone for modified_at

fn clone(&self) -> modified_at

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Column for modified_at

type Table = table

The table which this column belongs to

const NAME: &'static str = _

The name of this column

impl Debug for modified_at

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

Formats the value using the given formatter.

impl Default for modified_at

fn default() -> modified_at

Returns the “default value” for a type.

impl Expression for modified_at

type SqlType = Timestamp

The type that this expression represents in SQL

impl<DB> QueryFragment<DB, NotSpecialized> for modified_atwhere DB: Backend, StaticQueryFragmentInstance<table>: QueryFragment<DB>,

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

Walk over this QueryFragment for all passes.

fn to_sql( &self, out: &mut <DB as Backend>::QueryBuilder, backend: &DB ) -> Result<(), Error>

Converts this QueryFragment to its SQL representation.

fn collect_binds<'b>( &'b self, out: &mut <DB as HasBindCollector<'b>>::BindCollector, metadata_lookup: &mut <DB as TypeMetadata>::MetadataLookup, backend: &'b DB ) -> Result<(), Error>

Serializes all bind parameters in this query.

fn is_safe_to_cache_prepared(&self, backend: &DB) -> Result<bool, Error>

Is this query safe to store in the prepared statement cache?

fn is_noop(&self, backend: &DB) -> Result<bool, Error>

Does walking this AST have any effect?

impl QueryId for modified_at

type QueryId = modified_at

A type which uniquely represents Self in a SQL query.

const HAS_STATIC_QUERY_ID: bool = true

Can the SQL generated by Self be uniquely identified by its type?

fn query_id() -> Option<TypeId>

Returns the type id of Self::QueryId if Self::HAS_STATIC_QUERY_ID. Returns None otherwise.

impl<Rhs> Sub<Rhs> for modified_atwhere Rhs: AsExpression<<<modified_at as Expression>::SqlType as Sub>::Rhs>,

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

The resulting type after applying the - operator.

fn sub(self, __diesel_internal_rhs: Rhs) -> Self::Output

Performs the - operation.

impl ValidGrouping<()> for modified_at

type IsAggregate = No

Is this expression aggregate?

impl<__GB> ValidGrouping<__GB> for modified_atwhere __GB: IsContainedInGroupBy<modified_at, Output = Yes>,

type IsAggregate = Yes

Is this expression aggregate?

impl<QS> AppearsOnTable<QS> for modified_atwhere QS: AppearsInFromClause<table, Count = Once>,

impl Copy for modified_at

impl SelectableExpression<Only<table>> for modified_at

impl SelectableExpression<table> for modified_at