Struct WindowFunctionKey 

pub struct WindowFunctionKey {
    pub key: String,
}

Key for identifying and hashing window function expressions Used to map window function expressions to their pre-computed column indices

Fields

key: String

Serialized representation of the window function for hashing Format: “FUNC_NAME(args)|PARTITION BY col1,col2|ORDER BY col3 ASC|FRAME_SPEC”

Implementations

impl WindowFunctionKey

pub fn from_expression( function: &WindowFunctionSpec, window: &WindowSpec, ) -> Self

Create a key from a window function expression

Trait Implementations

impl Clone for WindowFunctionKey

fn clone(&self) -> WindowFunctionKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WindowFunctionKey

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

Formats the value using the given formatter.

impl Hash for WindowFunctionKey

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 PartialEq for WindowFunctionKey

fn eq(&self, other: &WindowFunctionKey) -> 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 Eq for WindowFunctionKey

impl StructuralPartialEq for WindowFunctionKey