Struct WatermarkDef 

pub struct WatermarkDef {
    pub column: Ident,
    pub expression: Option<Expr>,
}

Watermark definition

Fields

column: Ident

Column to use for watermark

expression: Option<Expr>

Watermark expression (e.g., column - INTERVAL ‘5’ SECOND). None when WATERMARK FOR col is used without AS expr, meaning watermark advances via source.watermark() with zero delay.

Trait Implementations

impl Clone for WatermarkDef

fn clone(&self) -> WatermarkDef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WatermarkDef

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

Formats the value using the given formatter.

impl PartialEq for WatermarkDef

fn eq(&self, other: &WatermarkDef) -> 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 StructuralPartialEq for WatermarkDef