Programs-Tutorials / SQL / 14_WINDOW_FUNCTION.sql Cannot retrieve latest commit at this time.

-- 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 ...

👉 Learn how to evaluate a piecewise function. A piecewise function is a function which uses different rules for different intervals. When evaluating a piecewise function, pay attention to the ...

👉 Learn how to find the inverse of a function. The inverse of a function is a function that reverses the "effect" of the original function. One important property of the inverse of a function is that ...