Module windows 

Window columns are ordered, partitioned rolling computations over the rows of a crate::Table, declared per-crate::View like expression columns - the analogue of SQL window functions. Each WindowSpec produces a new output column, named by its key in the windows map ({"name": {...spec}}, symmetric with expressions), which may be used anywhere a Table column can: columns, filter, sort, group_by, etc. Window columns update incrementally as the Table updates, including rows outside an update batch whose window frames were affected by it.

Structs

WindowSort

The Table column which orders each partition, with its direction - serialized as a two-element array (["ts", "desc"]), symmetric with the ViewConfig’s sort field.

WindowSpec

A declaration of a single window column, named by its key in Windows. See the module docs for the computation model.

Windows

The window columns of a ViewConfig, keyed by output column alias - symmetric with expressions ({"name": {...spec}}). An alias must not collide with a Table column, expression alias, or another window’s key.

Enums

WindowAggregate

WindowFrame

WindowSortDir

A window’s order direction. A dedicated two-variant enum rather than crate::config::SortDir - the column-sort extras (col asc, abs, none) are meaningless inside a window frame and unrepresentable here.