Enum WindowFunc 

pub enum WindowFunc {
    RowNumber,
    Rank,
    DenseRank,
    Lag {
        expr: Box<Expr>,
        offset: Option<usize>,
        default: Option<Box<Expr>>,
    },
    Lead {
        expr: Box<Expr>,
        offset: Option<usize>,
        default: Option<Box<Expr>>,
    },
}

🆕 Window function types

Variants

RowNumber

ROW_NUMBER() - sequential number of row within partition

Rank

RANK() - rank with gaps for ties

DenseRank

DENSE_RANK() - rank without gaps for ties

Lag

LAG(expr, offset, default) - value from previous row

Fields

expr: Box<Expr>

offset: Option<usize>

default: Option<Box<Expr>>

Lead

LEAD(expr, offset, default) - value from next row

Fields

expr: Box<Expr>

offset: Option<usize>

default: Option<Box<Expr>>

Trait Implementations

impl Clone for WindowFunc

fn clone(&self) -> WindowFunc

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WindowFunc

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

Formats the value using the given formatter.