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.