Module window 

Window function specification and evaluation.

Evaluated after sort, before projection. Each spec produces a new column appended to every row (e.g., ROW_NUMBER, RANK, SUM OVER).

Re-exports

pub use eval::evaluate_window_functions;

pub use spec::FrameBound;

pub use spec::WindowFrame;

pub use spec::WindowFuncSpec;

Modules

aggregate

Aggregate functions used as windows: sum, count, avg, min, max, first_value, last_value.

eval

Top-level dispatch for window-function evaluation.

frame

Window frame bound resolution.

helpers

Shared helpers for window-function evaluation.

offset

Offset window functions: lag, lead, nth_value.

ranking

Ranking and distribution window functions: row_number, rank, dense_rank, ntile, percent_rank, cume_dist.

running

Peer-aware running-aggregate for RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW.

spec

Window function spec and frame types serialized over the SPSC bridge.