// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
import type { WindowSort } from "./WindowSort.js";

/**
 * The serialized form of [`WindowSpec`].
 */
export type WindowSpec = { 
/**
 * The input column - either a real `Table` column or an expression
 * alias from the same `ViewConfig`.
 */
column: string, aggregate: string, 
/**
 * Columns whose distinct value tuples partition the rows; empty
 * partitions the whole `Table` as one group.
 */
partition_by?: Array<string>, 
/**
 * The `Table` column which orders each partition, and the direction.
 * This orders rows WITHIN the window frame only — it does not
 * reorder the `View`, which is what the view-level `sort` does.
 */
order_by?: WindowSort | null, 
/**
 * A frame of the `rows` preceding each row, plus the row itself.
 * Mutually exclusive with `range` and `cumulative`.
 */
rows?: number | null, 
/**
 * A frame of the rows whose `order_by` value lies within `range` of
 * each row's, requiring a numeric or temporal `order_by`. Mutually
 * exclusive with `rows` and `cumulative`.
 */
range?: number | null, 
/**
 * `true` frames all rows from the partition start through each row.
 * Default can be omitted.
 */
cumulative?: boolean | null, 
/**
 * Row offset for `lag`/`lead` (default 1).
 */
offset?: number | null, 
/**
 * Smoothing factor in `(0, 1]` for `ema`.
 */
alpha?: number | null, };