arrow::datatypes

Struct Decimal256Type

pub struct Decimal256Type {}
Expand description

The decimal type for a Decimal256Array

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impl ArrowPrimitiveType for Decimal256Type

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const DATA_TYPE: DataType = <Self as DecimalType>::DEFAULT_TYPE

the corresponding Arrow data type of this primitive type.
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type Native = i256

Corresponding Rust native type for the primitive type.
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fn get_byte_width() -> usize

👎Deprecated since 52.0.0: Use ArrowNativeType::get_byte_width
Returns the byte width of this primitive type.
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fn default_value() -> Self::Native

Returns a default value of this primitive type. Read more
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impl Debug for Decimal256Type

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

Formats the value using the given formatter. Read more
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impl DecimalType for Decimal256Type

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const BYTE_LENGTH: usize = 32usize

Width of the type
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const MAX_PRECISION: u8 = 76u8

Maximum number of significant digits
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const MAX_SCALE: i8 = 76i8

Maximum no of digits after the decimal point (note the scale can be negative)
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const TYPE_CONSTRUCTOR: fn(_: u8, _: i8) -> DataType = {arrow_schema::DataType::Decimal256 as fn(u8, i8) -> arrow_schema::DataType}

fn to create its DataType
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const DEFAULT_TYPE: DataType = _

Default values for DataType
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const PREFIX: &'static str = "Decimal256"

“Decimal128” or “Decimal256”, for use in error messages
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fn format_decimal( value: <Decimal256Type as ArrowPrimitiveType>::Native, precision: u8, scale: i8, ) -> String

Formats the decimal value with the provided precision and scale
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fn validate_decimal_precision( num: i256, precision: u8, ) -> Result<(), ArrowError>

Validates that value contains no more than precision decimal digits
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fn is_valid_decimal_precision( value: <Decimal256Type as ArrowPrimitiveType>::Native, precision: u8, ) -> bool

Determines whether value contains no more than precision decimal digits

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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impl<T> ArrowNumericType for T

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impl<T> Ungil for T
where T: Send,