Struct LateralJoinRel 

pub struct LateralJoinRel {
    pub common: Option<RelCommon>,
    pub left: Option<Box<Rel>>,
    pub right: Option<Box<Rel>>,
    pub expression: Option<Box<Expression>>,
    pub post_join_filter: Option<Box<Expression>>,
    pub type: i32,
    pub advanced_extension: Option<AdvancedExtension>,
}

The binary lateral JOIN relational operator left-join-right. This is semantically identical to JoinRel, except the right input is evaluated once per row of the left input and may reference fields from the current left row via OuterReference rel_reference.

LateralJoinRel must set RelCommon.rel_anchor so the right input can reference fields of the current left row.

Fields

common: Option<RelCommon>

left: Option<Box<Rel>>

The independent input whose rows drive evaluation of the lateral join.

right: Option<Box<Rel>>

The dependent input evaluated once per left row. It may reference fields from the current left row using OuterReference.rel_reference pointing to this LateralJoinRel’s RelCommon.rel_anchor.

expression: Option<Box<Expression>>

A boolean condition evaluated over the left and right inputs that determines whether a pair of records is a match.

post_join_filter: Option<Box<Expression>>

An optional boolean filter applied to each output record after join-type-specific output formation is complete. Semantically equivalent to placing a FilterRel directly above this join.

type: i32

Only INNER and left-oriented join types are valid for lateral joins: INNER, LEFT, LEFT_SEMI, LEFT_ANTI, LEFT_SINGLE, LEFT_MARK. RIGHT-oriented join types and OUTER are not valid because the right input is evaluated in the context of each left row and has no independent existence.

advanced_extension: Option<AdvancedExtension>

Implementations

impl LateralJoinRel

pub fn type(&self) -> JoinType

Returns the enum value of type, or the default if the field is set to an invalid enum value.

pub fn set_type(&mut self, value: JoinType)

Sets type to the provided enum value.

Trait Implementations

impl Clone for LateralJoinRel

fn clone(&self) -> LateralJoinRel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LateralJoinRel

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

Formats the value using the given formatter.

impl Default for LateralJoinRel

fn default() -> Self

Returns the “default value” for a type.

impl Message for LateralJoinRel

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl Name for LateralJoinRel

const NAME: &'static str = "LateralJoinRel"

Simple name for this Message. This name is the same as it appears in the source .proto file, e.g. FooBar.

const PACKAGE: &'static str = "substrait"

Package name this message type is contained in. They are domain-like and delimited by ., e.g. google.protobuf.

fn full_name() -> String

Fully-qualified unique name for this Message. It’s prefixed with the package name and names of any parent messages, e.g. google.rpc.BadRequest.FieldViolation. By default, this is the package name followed by the message name. Fully-qualified names must be unique within a domain of Type URLs.

fn type_url() -> String

Type URL for this Message, which by default is the full name with a leading slash, but may also include a leading domain name, e.g. type.googleapis.com/google.profile.Person. This can be used when serializing into the google.protobuf.Any type.

impl PartialEq for LateralJoinRel

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LateralJoinRel