Struct diesel::expression::UncheckedBind

source ·
pub struct UncheckedBind<Query, Value> { /* private fields */ }
Expand description

Returned by the SqlLiteral::bind() method when binding a value to a fragment of SQL.

Implementations§

source§

impl<Query, Value> UncheckedBind<Query, Value>
where Query: Expression,

source

pub fn sql(self, sql: &str) -> SqlLiteral<Query::SqlType, Self>

Use literal SQL in the query builder.

This function is intended for use when you need a small bit of raw SQL in your query. If you want to write the entire query using raw SQL, use sql_query instead.

§Safety

This function should be used with care, as Diesel cannot validate that the value is of the right type nor can it validate that you have passed the correct number of parameters.

§Examples
let query = users
    .select(name)
    .filter(
        sql::<Bool>("id > ")
        .bind::<Integer,_>(1)
        .sql(" AND name <> 'Ryan'")
    )
    .get_results(connection);
let expected = vec!["Tess".to_string()];
assert_eq!(Ok(expected), query);

Trait Implementations§

source§

impl<Query: Clone, Value: Clone> Clone for UncheckedBind<Query, Value>

source§

fn clone(&self) -> UncheckedBind<Query, Value>

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl<Query: Debug, Value: Debug> Debug for UncheckedBind<Query, Value>

source§

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

Formats the value using the given formatter. Read more
source§

impl<Query, Value> Expression for UncheckedBind<Query, Value>
where Query: Expression,

§

type SqlType = <Query as Expression>::SqlType

The type that this expression represents in SQL
source§

impl<Q, Value> Query for UncheckedBind<Q, Value>
where Q: Query,

§

type SqlType = <Q as Query>::SqlType

The SQL type that this query represents. Read more
source§

impl<Query, Value, DB> QueryFragment<DB> for UncheckedBind<Query, Value>
where DB: Backend, Query: QueryFragment<DB>, Value: QueryFragment<DB>,

source§

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

Walk over this QueryFragment for all passes. Read more
source§

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 more
source§

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>

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§

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

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Does walking this AST have any effect?
source§

impl<Query: QueryId, Value: QueryId> QueryId for UncheckedBind<Query, Value>

§

type QueryId = UncheckedBind<<Query as QueryId>::QueryId, <Value as QueryId>::QueryId>

A type which uniquely represents Self in a SQL query. Read more
source§

const HAS_STATIC_QUERY_ID: bool = _

Can the SQL generated by Self be uniquely identified by its type? Read more
source§

fn query_id() -> Option<TypeId>

Returns the type id of Self::QueryId if Self::HAS_STATIC_QUERY_ID. Returns None otherwise. Read more
source§

impl<Query, Value, Conn> RunQueryDsl<Conn> for UncheckedBind<Query, Value>

source§

fn load<'query, U>(self, conn: &mut Conn) -> QueryResult<Vec<U>>
where Self: LoadQuery<'query, Conn, U>,

Executes the given query, returning a Vec with the returned rows. Read more
source§

fn load_iter<'conn, 'query: 'conn, U, B>( self, conn: &'conn mut Conn ) -> QueryResult<Self::RowIter<'conn>>
where U: 'conn, Self: LoadQuery<'query, Conn, U, B> + 'conn,

Executes the given query, returning an Iterator with the returned rows. Read more
source§

fn get_result<'query, U>(self, conn: &mut Conn) -> QueryResult<U>
where Self: LoadQuery<'query, Conn, U>,

Runs the command, and returns the affected row. Read more
source§

fn get_results<'query, U>(self, conn: &mut Conn) -> QueryResult<Vec<U>>
where Self: LoadQuery<'query, Conn, U>,

Runs the command, returning an Vec with the affected rows. Read more
source§

impl<Query, Value, GB> ValidGrouping<GB> for UncheckedBind<Query, Value>

§

type IsAggregate = Never

Is this expression aggregate? Read more
source§

impl<QS, Query, Value> AppearsOnTable<QS> for UncheckedBind<Query, Value>
where Self: Expression,

source§

impl<Query: Copy, Value: Copy> Copy for UncheckedBind<Query, Value>

source§

impl<QS, Query, Value> SelectableExpression<QS> for UncheckedBind<Query, Value>
where Self: AppearsOnTable<QS>,

Auto Trait Implementations§

§

impl<Query, Value> Freeze for UncheckedBind<Query, Value>
where Query: Freeze, Value: Freeze,

§

impl<Query, Value> RefUnwindSafe for UncheckedBind<Query, Value>
where Query: RefUnwindSafe, Value: RefUnwindSafe,

§

impl<Query, Value> Send for UncheckedBind<Query, Value>
where Query: Send, Value: Send,

§

impl<Query, Value> Sync for UncheckedBind<Query, Value>
where Query: Sync, Value: Sync,

§

impl<Query, Value> Unpin for UncheckedBind<Query, Value>
where Query: Unpin, Value: Unpin,

§

impl<Query, Value> UnwindSafe for UncheckedBind<Query, Value>
where Query: UnwindSafe, Value: UnwindSafe,

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T, ST> AsExpression<ST> for T
where T: Expression<SqlType = ST>, ST: SqlType + TypedExpressionType,

§

type Expression = T

The expression being returned
source§

fn as_expression(self) -> T

Perform the conversion
source§

impl<T> AsQuery for T
where T: Query,

§

type SqlType = <T as Query>::SqlType

The SQL type of Self::Query
§

type Query = T

What kind of query does this type represent?
source§

fn as_query(self) -> <T as AsQuery>::Query

Converts a type which semantically represents a SQL query into the actual query being executed. See the trait level docs for more.
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

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

Mutably borrows from an owned value. Read more
source§

impl<Conn, DB, T> ExecuteDsl<Conn, DB> for T
where Conn: Connection<Backend = DB>, DB: Backend, T: QueryFragment<DB> + QueryId,

source§

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

Execute this command
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

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

source§

impl<T> IntoSql for T

source§

fn into_sql<T>(self) -> AsExprOf<Self, T>

Convert self to an expression for Diesel’s query builder. Read more
source§

fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>

Convert &self to an expression for Diesel’s query builder. Read more
source§

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

source§

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>

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 more
source§

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

source§

fn is_not_distinct_from<T>(self, other: T) -> IsNotDistinctFrom<Self, T>
where Self::SqlType: SqlType, T: AsExpression<Self::SqlType>,

Available on crate feature postgres_backend only.
Creates a PostgreSQL IS NOT DISTINCT FROM expression. Read more
source§

fn is_distinct_from<T>(self, other: T) -> IsDistinctFrom<Self, T>
where Self::SqlType: SqlType, T: AsExpression<Self::SqlType>,

Available on crate feature postgres_backend only.
Creates a PostgreSQL IS DISTINCT FROM expression. Read more
source§

impl<T, DB> QueryFragmentForCachedStatement<DB> for T
where DB: Backend, <DB as Backend>::QueryBuilder: Default, T: QueryFragment<DB>,

source§

fn construct_sql(&self, backend: &DB) -> Result<String, Error>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Convert the query fragment into a SQL string for the given backend
source§

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

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Check whether it’s safe to cache the query
source§

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

source§

fn is<T>(self, other: T) -> Is<Self, T>
where Self::SqlType: SqlType, T: AsExpression<Self::SqlType>,

Available on crate feature sqlite only.
Creates a Sqlite IS expression. Read more
source§

fn is_not<T>(self, other: T) -> IsNot<Self, T>
where Self::SqlType: SqlType, T: AsExpression<Self::SqlType>,

Available on crate feature sqlite only.
Creates a Sqlite IS NOT expression. Read more
source§

impl<T> ToOwned for T
where T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

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

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

source§

fn vzip(self) -> V