Struct AggregateExpr

pub struct AggregateExpr {
    pub func: AggregateFunc,
    pub expr: Box<HirScalarExpr>,
    pub distinct: bool,
}

Fields

func: AggregateFunc

expr: Box<HirScalarExpr>

distinct: bool

Implementations

impl AggregateExpr

pub fn bind_parameters(&mut self, params: &Params) -> Result<(), PlanError>

Replaces any parameter references in the expression with the corresponding datum from parameters.

pub fn typ( &self, outers: &[RelationType], inner: &RelationType, params: &BTreeMap<usize, ScalarType>, ) -> ColumnType

pub fn is_count_asterisk(&self) -> bool

Returns whether the expression is COUNT() or not. Note that when we define the count builtin in sql::func, we convert COUNT() to COUNT(true), making it indistinguishable from literal COUNT(true), but we prefer to consider this as the former.

(MIR has the same is_count_asterisk.)

impl AggregateExpr

fn applied_to( self, id_gen: &mut IdGen, col_map: &ColumnMap, cte_map: &mut BTreeMap<LocalId, CteDesc>, inner: &mut MirRelationExpr, context: &Context<'_>, ) -> Result<AggregateExpr, PlanError>

Trait Implementations

impl Clone for AggregateExpr

fn clone(&self) -> AggregateExpr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AggregateExpr

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AggregateExpr

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for AggregateExpr

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

Formats the value using the given formatter.

impl Hash for AggregateExpr

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 Ord for AggregateExpr

fn cmp(&self, other: &AggregateExpr) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for AggregateExpr

fn eq(&self, other: &AggregateExpr) -> 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 PartialOrd for AggregateExpr

fn partial_cmp(&self, other: &AggregateExpr) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for AggregateExpr

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for AggregateExpr

impl StructuralPartialEq for AggregateExpr