Struct AggregateRel

pub struct AggregateRel {
    pub common: Option<RelCommon>,
    pub input: Option<Box<Rel>>,
    pub groupings: Vec<Grouping>,
    pub measures: Vec<Measure>,
    pub grouping_expressions: Vec<Expression>,
    pub advanced_extension: Option<AdvancedExtension>,
}

The relational operator representing a GROUP BY Aggregate

Fields

common: Option<RelCommon>

input: Option<Box<Rel>>

Input of the aggregation

groupings: Vec<Grouping>

A list of zero or more grouping sets that the aggregation measures should be calculated for. There must be at least one grouping set if there are no measures (but it can be the empty grouping set).

measures: Vec<Measure>

A list of one or more aggregate expressions along with an optional filter. Required if there are no groupings.

grouping_expressions: Vec<Expression>

A list of zero or more grouping expressions that grouping sets (i.e., Grouping messages in the groupings field) can reference. Each expression in this list must be referred to by at least one Grouping.expression_references.

advanced_extension: Option<AdvancedExtension>

Trait Implementations

impl Clone for AggregateRel

fn clone(&self) -> AggregateRel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AggregateRel

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

Formats the value using the given formatter.

impl Default for AggregateRel

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for AggregateRel

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for AggregateRel

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 PartialEq for AggregateRel

fn eq(&self, other: &AggregateRel) -> 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 Serialize for AggregateRel

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AggregateRel