This page is a quick reference checkpoint for MIN OVER in SQL Server: behavior, syntax rules, edge cases, and a minimal example; plus the official vendor documentation.
MIN OVER returns the smallest value in the window frame.
When used with OVER, MIN returns the minimum value over the specified window of rows and ignores NULL values; for character data, finds lowest value in the collation sequence.
If this behavior feels unintuitive, the tutorial below explains the underlying pattern step-by-step.
MIN supports the OVER clause, with optional PARTITION BY and ORDER BY.
SELECT department, salary, MIN(salary) OVER (PARTITION BY department) AS min_salary_in_dept FROM employees;
If you came here to confirm syntax, you’re done. If you came here to get better at window functions, choose your next step.
MIN 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 SQL Server Documentation →Looking for more functions across all SQL dialects? Visit the full SQL Dialects & Window Functions Documentation.