Select Top # in Presto SQL?
If you simply want to limit the number of rows in the result set, you can use LIMIT, with or without ORDER BY:
SELECT department, salaryFROM employeesORDER BY salary DESCLIMIT 10If you want the top values per group, you can use the standard SQL row_number() window function. For example, to get the top 3 employees per department by salary:
SELECT department, salaryFROM ( SELECT department, salary row_number() OVER ( PARTITION BY department ORDER BY salary DESC) AS rn FROM employees)WHERE rn <= 3