Module datafusion_expr::window_function

Window functions provide the ability to perform calculations across sets of rows that are related to the current query row.

see also https://www.postgresql.org/docs/current/functions-window.html

Enums

BuiltInWindowFunction

An aggregate function that is part of a built-in window function

WindowFunction

WindowFunction

Functions

find_df_window_func

Find DataFusion’s built-in window function by name.

return_type

Returns the datatype of the window function

signature

the signatures supported by the function fun.

signature_for_built_in

the signatures supported by the built-in window function fun.