This page is a quick reference checkpoint for MAX OVER in ORACLE: behavior, syntax rules, edge cases, and a minimal example; plus the official vendor documentation.
MAX OVER returns the largest value in the window frame.
Behavior: MAX returns the maximum value of expr; for analytic use it returns one row per input row within the partition/window defined by analytic_clause. (Documentation gives both aggregate and analytic examples.)
If this behavior feels unintuitive, the tutorial below explains the underlying pattern step-by-step.
Syntax : MAX(expr) OVER (analytic_clause) - can be used as an aggregate or analytic function.
SELECT manager_id, last_name, salary, MAX(salary) OVER (PARTITION BY manager_id) AS mgr_max FROM employees ORDER BY manager_id, last_name, salary;
If you came here to confirm syntax, you’re done. If you came here to get better at window functions, choose your next step.
MAX OVER is part of a bigger window-function pattern. If you want the “why”, start here: Aggregate Window Functions
Reading docs is useful. Writing the query correctly under pressure is the skill.
For the authoritative spec, use the vendor docs. This page is the fast “sanity check”.
View ORACLE Documentation →Looking for more functions across all SQL dialects? Visit the full SQL Dialects & Window Functions Documentation.