Struct data

pub struct data;

Trait Implementations

impl AppearsInFromClause<Only<table>> for data

type Count = Once

How many times does Self appear in QS?

impl<TSM> AppearsInFromClause<Tablesample<table, TSM>> for data

where TSM: TablesampleMethod,

type Count = Once

How many times does Self appear in QS?

impl Clone for data

fn clone(&self) -> data

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Column for data

const NAME: &'static str = "data"

The name of this column

type Table = table

The table which this column belongs to

impl Debug for data

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

Formats the value using the given formatter.

impl Default for data

fn default() -> data

Returns the “default value” for a type.

impl Expression for data

type SqlType = Text

The type that this expression represents in SQL

impl<DB> QueryFragment<DB> for data

where 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 Backend>::BindCollector<'b>, 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 data

const HAS_STATIC_QUERY_ID: bool = true

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

type QueryId = data

A type which uniquely represents Self in a SQL query.

fn query_id() -> Option<TypeId>

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

impl ValidGrouping<()> for data

type IsAggregate = No

Is this expression aggregate?

impl<__GB> ValidGrouping<__GB> for data

where __GB: IsContainedInGroupBy<data, Output = Yes>,

type IsAggregate = Yes

Is this expression aggregate?

impl<QS> AppearsOnTable<QS> for data

where QS: AppearsInFromClause<table, Count = Once>,

impl Copy for data

impl SelectableExpression<Only<table>> for data

impl<TSM> SelectableExpression<Tablesample<table, TSM>> for data

where TSM: TablesampleMethod,

impl SelectableExpression<table> for data