Enum mz_expr::WindowFrameBound

pub enum WindowFrameBound {
    UnboundedPreceding,
    OffsetPreceding(u64),
    CurrentRow,
    OffsetFollowing(u64),
    UnboundedFollowing,
}

Specifies WindowFrame’s start_bound and end_bound

The order between frame bounds is significant, as Postgres enforces some restrictions there.

Variants

UnboundedPreceding

UNBOUNDED PRECEDING

OffsetPreceding(u64)

<N> PRECEDING

CurrentRow

CURRENT ROW

OffsetFollowing(u64)

<N> FOLLOWING

UnboundedFollowing

UNBOUNDED FOLLOWING.

Trait Implementations

impl Arbitrary for WindowFrameBound

type Parameters = (<u64 as Arbitrary>::Parameters, <u64 as Arbitrary>::Parameters)

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.

type Strategy = TupleUnion<((u32, Arc<fn() -> WindowFrameBound>), (u32, Arc<Map<<u64 as Arbitrary>::Strategy, fn(u64) -> WindowFrameBound>>), (u32, Arc<fn() -> WindowFrameBound>), (u32, Arc<Map<<u64 as Arbitrary>::Strategy, fn(u64) -> WindowFrameBound>>), (u32, Arc<fn() -> WindowFrameBound>))>

The type of Strategy used to generate values of type Self.

fn arbitrary_with(_top: 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.

fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self).

impl Clone for WindowFrameBound

fn clone(&self) -> WindowFrameBound

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WindowFrameBound

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WindowFrameBound

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

Deserialize this value from the given Serde deserializer.

impl Hash for WindowFrameBound

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, 

Feeds a slice of this type into the given Hasher.

impl MzReflect for WindowFrameBound

fn add_to_reflected_type_info(rti: &mut ReflectedTypeInfo)

Adds names and types of the fields of the struct or enum to rti.

impl Ord for WindowFrameBound

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl PartialEq<WindowFrameBound> for WindowFrameBound

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<WindowFrameBound> for WindowFrameBound

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Serialize for WindowFrameBound

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 WindowFrameBound

impl StructuralEq for WindowFrameBound

impl StructuralPartialEq for WindowFrameBound