Struct backend::schema::plants::columns::has_drought_tolerance

pub struct has_drought_tolerance;

Trait Implementations

impl AppearsInFromClause<Only<table>> for has_drought_tolerance

type Count = Once

How many times does Self appear in QS?

impl Clone for has_drought_tolerance

fn clone(&self) -> has_drought_tolerance

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Column for has_drought_tolerance

type Table = table

The table which this column belongs to

const NAME: &'static str = _

The name of this column

impl Debug for has_drought_tolerance

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

Formats the value using the given formatter.

impl Default for has_drought_tolerance

fn default() -> has_drought_tolerance

Returns the “default value” for a type.

impl Expression for has_drought_tolerance

type SqlType = Nullable<Bool>

The type that this expression represents in SQL

impl<DB> QueryFragment<DB, NotSpecialized> for has_drought_tolerancewhere 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 has_drought_tolerance

type QueryId = has_drought_tolerance

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 ValidGrouping<()> for has_drought_tolerance

type IsAggregate = No

Is this expression aggregate?

impl<__GB> ValidGrouping<__GB> for has_drought_tolerancewhere __GB: IsContainedInGroupBy<has_drought_tolerance, Output = Yes>,

type IsAggregate = Yes

Is this expression aggregate?

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

impl Copy for has_drought_tolerance

impl SelectableExpression<Only<table>> for has_drought_tolerance

impl SelectableExpression<table> for has_drought_tolerance