Struct Float4 

pub struct Float4;

real (float4): 32-bit float. Rust f32.

Trait Implementations

impl AggregatePolicy<PostgresDialect> for Float4

type Sum = Float8

Result type of SUM.

type Avg = Float8

Result type of AVG.

impl ArithmeticOutput for Float4

type Output = Float4

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Float4> for Int2

type Output = Float4

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Float4> for Int4

type Output = Float8

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Float4> for Int8

type Output = Float8

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Float4> for Float8

type Output = Float8

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Float4> for Numeric

type Output = Float8

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Float8> for Float4

type Output = Float8

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Int2> for Float4

type Output = Float4

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Int4> for Float4

type Output = Float8

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Int8> for Float4

type Output = Float8

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl ArithmeticOutput<Numeric> for Float4

type Output = Float8

The resulting SQL type of the arithmetic expression.

type Nullability = PropagateNullability

Whether the operator itself can produce NULL even from non-NULL operands: / and % on SQLite’s Integer, Real and Numeric and on every MySQL numeric type, which return NULL for a zero divisor. PostgreSQL raises an error instead, so its operators only propagate operand nullability.

impl Assignable for Float4

impl Assignable<Float4> for Float8

impl Assignable<Float4> for Numeric

impl Assignable<Float4> for Any

impl Assignable<Int2> for Float4

impl Assignable<Int4> for Float4

impl Assignable<Int8> for Float4

impl Clone for Float4

fn clone(&self) -> Float4

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Compatible for Float4

impl Compatible<Any> for Float4

impl Compatible<Float4> for Float8

impl Compatible<Float4> for Int2

impl Compatible<Float4> for Int4

impl Compatible<Float4> for Int8

impl Compatible<Float4> for Numeric

impl Compatible<Float4> for Any

impl Compatible<Float8> for Float4

impl Compatible<Int2> for Float4

impl Compatible<Int4> for Float4

impl Compatible<Int8> for Float4

impl Compatible<Numeric> for Float4

impl Compatible<Placeholder> for Float4

impl Copy for Float4

impl DataType for Float4

impl Debug for Float4

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

Formats the value using the given formatter.

impl Default for Float4

fn default() -> Float4

Returns the “default value” for a type.

impl DefaultCastTypeName for Float4

const CAST_TYPE_NAME: &'static str = "REAL"

The type name used in CAST(expr AS <name>).

impl Eq for Float4

impl Floating for Float4

impl Hash for Float4

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl NegOutput for Float4

type Output = Float4

The resulting SQL type of -expr.

impl Numeric for Float4

impl PartialEq for Float4

fn eq(&self, other: &Float4) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl RoundingPolicy<PostgresDialect> for Float4

type Output = Float8

Result type of the rounding functions.

fn precision_operand<'a, V>(expr: SQL<'a, V>) -> SQL<'a, V>

where V: SQLParam + 'a,

Prepares the operand of ROUND(expr, precision).

fn coerce_result<'a, V>(sql: SQL<'a, V>) -> SQL<'a, V>

where V: SQLParam + 'a,

Coerces a rounding function’s result to Self::Output.

impl SQLTypeToRust<PostgresDialect> for Float4

type RustType = f32

impl StatisticalAggregatePolicy<PostgresDialect> for Float4

type StddevPop = Float8

Result type of STDDEV_POP.

type StddevSamp = Float8

Result type of STDDEV_SAMP.

type VarPop = Float8

Result type of VAR_POP.

type VarSamp = Float8

Result type of VAR_SAMP / VARIANCE.

impl StructuralPartialEq for Float4