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Excel's newest functions are flashy, but these classics are still the best

Old-school Excel functions like SUMPRODUCT, INDEX/MATCH, and IFERROR remain essential for stable, readable, and maintainable ...
GitHub

session_13_window_analytical_functions

-- Without ORDER BY, previous row has no clear meaning. -- Here previous salary is calculated inside each department only. -- So department becomes the partition/window. -- For every department, ...
IEEE

Analysis of spectral characteristics of Kaiser Window Function for various application

Abstract: Window method is one of most convenient and popular method for the designing of FIR filter. We know the Kaiser Window function has adjustable behaviour as well as superior performance as ...
GitHub

session_11_window_functions

-- but all employee rows still remain visible. -- The "window" here is all rows belonging to the same department_id. -- PARTITION BY does NOT merge rows like GROUP BY. -- It only creates separate ...