pub enum VariadicFunc {
Show 41 variants Coalesce, Greatest, Least, Concat, ConcatWs, MakeTimestamp, PadLeading, Substr, Replace, JsonbBuildArray, JsonbBuildObject, MapBuild { value_type: ScalarType, }, ArrayCreate { elem_type: ScalarType, }, ArrayToString { elem_type: ScalarType, }, ArrayIndex { offset: i64, }, ListCreate { elem_type: ScalarType, }, RecordCreate { field_names: Vec<ColumnName>, }, ListIndex, ListSliceLinear, SplitPart, RegexpMatch, HmacString, HmacBytes, ErrorIfNull, DateBinTimestamp, DateBinTimestampTz, DateDiffTimestamp, DateDiffTimestampTz, DateDiffDate, DateDiffTime, And, Or, RangeCreate { elem_type: ScalarType, }, MakeAclItem, MakeMzAclItem, Translate, ArrayPosition, ArrayFill { elem_type: ScalarType, }, TimezoneTime, RegexpSplitToArray, RegexpReplace,
}

Variants§

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Coalesce

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Greatest

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Least

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Concat

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ConcatWs

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MakeTimestamp

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PadLeading

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Substr

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Replace

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JsonbBuildArray

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JsonbBuildObject

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MapBuild

Fields

§value_type: ScalarType
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ArrayCreate

Fields

§elem_type: ScalarType
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ArrayToString

Fields

§elem_type: ScalarType
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ArrayIndex

Fields

§offset: i64
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ListCreate

Fields

§elem_type: ScalarType
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RecordCreate

Fields

§field_names: Vec<ColumnName>
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ListIndex

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ListSliceLinear

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SplitPart

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RegexpMatch

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HmacString

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HmacBytes

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ErrorIfNull

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DateBinTimestamp

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DateBinTimestampTz

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DateDiffTimestamp

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DateDiffTimestampTz

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DateDiffDate

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DateDiffTime

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And

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Or

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RangeCreate

Fields

§elem_type: ScalarType
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MakeAclItem

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MakeMzAclItem

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Translate

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ArrayPosition

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ArrayFill

Fields

§elem_type: ScalarType
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TimezoneTime

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RegexpSplitToArray

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RegexpReplace

Implementations§

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impl VariadicFunc

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pub fn eval<'a>( &'a self, datums: &[Datum<'a>], temp_storage: &'a RowArena, exprs: &'a [MirScalarExpr] ) -> Result<Datum<'a>, EvalError>

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pub fn is_associative(&self) -> bool

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pub fn output_type(&self, input_types: Vec<ColumnType>) -> ColumnType

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pub fn propagates_nulls(&self) -> bool

Whether the function output is NULL if any of its inputs are NULL.

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pub fn introduces_nulls(&self) -> bool

Whether the function might return NULL even if none of its inputs are NULL.

This is presently conservative, and may indicate that a function introduces nulls even when it does not.

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pub fn switch_and_or(&self) -> Self

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pub fn is_infix_op(&self) -> bool

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pub fn unit_of_and_or(&self) -> MirScalarExpr

Gives the unit (u) of OR or AND, such that u AND/OR x == x. Note that a 0-arg AND/OR evaluates to unit_of_and_or.

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pub fn zero_of_and_or(&self) -> MirScalarExpr

Gives the zero (z) of OR or AND, such that z AND/OR x == z.

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pub fn could_error(&self) -> bool

Returns true if the function could introduce an error on non-error inputs.

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pub fn is_monotone(&self) -> bool

Returns true if the function is monotone. (Non-strict; either increasing or decreasing.) Monotone functions map ranges to ranges: ie. given a range of possible inputs, we can determine the range of possible outputs just by mapping the endpoints.

This describes the pointwise behaviour of the function: ie. if more than one argument is provided, this describes the behaviour of any specific argument as the others are held constant. (For example, COALESCE(a, b) is monotone in a because for any particular value of b, increasing a will never cause the result to decrease.)

This property describes the behaviour of the function over ranges where the function is defined: ie. the arguments and the result are non-error datums.

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impl Arbitrary for VariadicFunc

An explicit Arbitrary implementation needed here because of a known proptest issue.

Revert to the derive-macro impementation once the issue1 is fixed.

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type Parameters = ()

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.
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type Strategy = Union<BoxedStrategy<VariadicFunc>>

The type of Strategy used to generate values of type Self.
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fn arbitrary_with(_: Self::Parameters) -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args. Read more
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fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). Read more
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impl Clone for VariadicFunc

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fn clone(&self) -> VariadicFunc

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for VariadicFunc

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for VariadicFunc

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Display for VariadicFunc

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

Formats the value using the given formatter. Read more
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impl Hash for VariadicFunc

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl MzReflect for VariadicFunc

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fn add_to_reflected_type_info(rti: &mut ReflectedTypeInfo)

Adds names and types of the fields of the struct or enum to rti. Read more
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impl Ord for VariadicFunc

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for VariadicFunc

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for VariadicFunc

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Serialize for VariadicFunc

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

Serialize this value into the given Serde serializer. Read more
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impl Eq for VariadicFunc

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impl StructuralEq for VariadicFunc

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impl StructuralPartialEq for VariadicFunc

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

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Gets the TypeId of self. Read more
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where T: ?Sized,

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Immutably borrows from an owned value. Read more
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Performs the cast.
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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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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> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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const ALIGN: usize = _

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type Container = Vec<T>

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