Struct diesel::sql_types::Double

[+] Show declaration

pub struct Double;

[−] Expand description

The double precision float SQL type.

ToSql impls

• f64

FromSql impls

• f64

Trait Implementations

impl Foldable for Double

type Sum = Nullable<Double>

The SQL type of sum(this_type)

type Avg = Nullable<Double>

The SQL type of avg(this_type)

impl Add for Double

type Rhs = Double

The SQL type which can be added to this one

type Output = Double

The SQL type of the result of adding Rhs to Self

impl Sub for Double

type Rhs = Double

The SQL type which can be subtracted from this one

type Output = Double

The SQL type of the result of subtracting Rhs from Self

impl Mul for Double

type Rhs = Double

The SQL type which this can be multiplied by

type Output = Double

The SQL type of the result of multiplying Self by Rhs

impl Div for Double

type Rhs = Double

The SQL type which this one can be divided by

type Output = Double

The SQL type of the result of dividing Self by Rhs

impl SqlOrd for Double

impl QueryId for Double

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type QueryId = Double

A type which uniquely represents Self in a SQL query.

const HAS_STATIC_QUERY_ID: bool

HAS_STATIC_QUERY_ID: bool = true

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

fn query_id() -> Option<TypeId>

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

impl NotNull for Double

impl SingleValue for Double

impl HasSqlType<Double> for Sqlite

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fn metadata(_: &()) -> SqliteType

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Fetch the metadata for the given type

impl HasSqlType<Double> for Mysql

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fn metadata(_: &()) -> MysqlType

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Fetch the metadata for the given type

impl HasSqlType<Double> for Pg

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fn metadata(_: &PgMetadataLookup) -> PgTypeMetadata

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Fetch the metadata for the given type

impl Debug for Double

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

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Formats the value using the given formatter.

impl Clone for Double

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fn clone(&self) -> Double

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Returns a copy of the value.

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

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Performs copy-assignment from source.

impl Copy for Double

impl Default for Double

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fn default() -> Double

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Returns the "default value" for a type.

impl FromSql<Double, Sqlite> for f64

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fn from_sql(value: Option<&SqliteValue>) -> Result<Self>

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See the trait documentation.

impl<DB: Backend<RawValue = [u8]>> FromSql<Double, DB> for f64

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fn from_sql(bytes: Option<&[u8]>) -> Result<Self>

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See the trait documentation.

impl<DB: Backend> ToSql<Double, DB> for f64

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fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

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See the trait documentation.

impl<'expr> AsExpression<Double> for &'expr f64

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type Expression = Bound<Double, Self>

The expression being returned

fn as_expression(self) -> Self::Expression

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Perform the conversion

impl<'expr2, 'expr> AsExpression<Double> for &'expr2 &'expr f64

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type Expression = Bound<Double, Self>

The expression being returned

fn as_expression(self) -> Self::Expression

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Perform the conversion

impl AsExpression<Double> for f64

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type Expression = Bound<Double, Self>

The expression being returned

fn as_expression(self) -> Self::Expression

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Perform the conversion