Enum PartitionStrategy 

#[repr(i32)]
pub enum PartitionStrategy {
    Unspecified = 0,
    Hash = 1,
    Range = 2,
    Broadcast = 3,
}

Partitioning strategy for a PartitionHint enhancement.

Variants

Unspecified = 0

No strategy specified.

Hash = 1

Distribute rows by hashing one or more key columns.

Range = 2

Sort-based range partitioning.

Broadcast = 3

Broadcast the entire relation to every partition.

Implementations

impl PartitionStrategy

pub fn is_valid(value: i32) -> bool

Returns true if value is a variant of PartitionStrategy.

pub fn from_i32(value: i32) -> Option<PartitionStrategy>

👎Deprecated: Use the TryFrom<i32> implementation instead

Converts an i32 to a PartitionStrategy, or None if value is not a valid variant.

impl PartitionStrategy

pub fn as_str_name(self) -> &'static str

The identifier used in the text format (without the leading &).

pub fn from_str_name(s: &str) -> Option<Self>

Parse from the text-format identifier (without the leading &).

Trait Implementations

impl Clone for PartitionStrategy

fn clone(&self) -> PartitionStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PartitionStrategy

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

Formats the value using the given formatter.

impl Default for PartitionStrategy

fn default() -> PartitionStrategy

Returns the “default value” for a type.

impl From<PartitionStrategy> for i32

fn from(value: PartitionStrategy) -> i32

Converts to this type from the input type.

impl Hash for PartitionStrategy

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

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 PartialEq for PartitionStrategy

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<i32> for PartitionStrategy

type Error = UnknownEnumValue

The type returned in the event of a conversion error.

fn try_from(value: i32) -> Result<PartitionStrategy, UnknownEnumValue>

Performs the conversion.

impl Copy for PartitionStrategy

impl Eq for PartitionStrategy

impl StructuralPartialEq for PartitionStrategy