Struct Float

pub struct Float;

The float SQL type.

ToSql impls

• f32

FromSql impls

• f32

Trait Implementations

impl Add for Float

type Rhs = Float

The SQL type which can be added to this one

type Output = Float

The SQL type of the result of adding Rhs to Self

impl<'__expr, '__expr2> AsExpression<Float> for &'__expr2 &'__expr f32

type Expression = Bound<Float, &'__expr2 &'__expr f32>

The expression being returned

fn as_expression(self) -> Self::Expression

Perform the conversion

impl<'__expr> AsExpression<Float> for &'__expr f32

type Expression = Bound<Float, &'__expr f32>

The expression being returned

fn as_expression(self) -> Self::Expression

Perform the conversion

impl AsExpression<Float> for f32

type Expression = Bound<Float, f32>

The expression being returned

fn as_expression(self) -> Self::Expression

Perform the conversion

impl Clone for Float

fn clone(&self) -> Float

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Float

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

Formats the value using the given formatter.

impl Default for Float

fn default() -> Float

Returns the “default value” for a type.

impl Div for Float

type Rhs = Float

The SQL type which this one can be divided by

type Output = Float

The SQL type of the result of dividing Self by Rhs

impl Foldable for Float

type Sum = Nullable<Float>

The SQL type of sum(this_type)

type Avg = Nullable<Double>

The SQL type of avg(this_type)

impl FromSql<Float, Mysql> for f32

Available on crate feature mysql_backend only.

fn from_sql(value: MysqlValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql(bytes: Option<DB::RawValue<'_>>) -> Result<Self>

A specialized variant of from_sql for handling null values.

impl FromSql<Float, Pg> for f32

Available on crate feature postgres_backend only.

fn from_sql(value: PgValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql(bytes: Option<DB::RawValue<'_>>) -> Result<Self>

A specialized variant of from_sql for handling null values.

impl FromSql<Float, Sqlite> for f32

Available on crate feature sqlite only.

fn from_sql(value: SqliteValue<'_, '_, '_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql(bytes: Option<DB::RawValue<'_>>) -> Result<Self>

A specialized variant of from_sql for handling null values.

impl HasSqlType<Float> for Mysql

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

Fetch the metadata for the given type

impl HasSqlType<Float> for Pg

fn metadata(_: &mut Self::MetadataLookup) -> PgTypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Float> for Sqlite

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

Fetch the metadata for the given type

impl Mul for Float

type Rhs = Float

The SQL type which this can be multiplied by

type Output = Float

The SQL type of the result of multiplying Self by Rhs

impl QueryId for Float

const HAS_STATIC_QUERY_ID: bool = true

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

type QueryId = Float

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 SqlType for Float

type IsNull = NotNull

Is this type nullable?

impl Sub for Float

type Rhs = Float

The SQL type which can be subtracted from this one

type Output = Float

The SQL type of the result of subtracting Rhs from Self

impl ToSql<Float, Mysql> for f32

Available on crate feature mysql_backend only.

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Mysql>) -> Result

See the trait documentation.

impl ToSql<Float, Pg> for f32

Available on crate feature postgres_backend only.

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Pg>) -> Result

See the trait documentation.

impl ToSql<Float, Sqlite> for f32

Available on crate feature sqlite only.

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Sqlite>) -> Result

See the trait documentation.

impl Copy for Float

impl SingleValue for Float

impl SqlOrd for Float