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SELECT CHARACTER_MAXIMUM_LENGTH
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = 'your_database'
AND TABLE_NAME = 'your_table'
AND COLUMN_NAME = 'your_column';
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SELECT MAX(<numeric column>) FROM <table>;
SELECT MAX(<numeric column>) FROM <table> GROUP BY <other column>;
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select * from (
select top 1 City, LEN(City) City_Length from STATION order by City_Length ASC,City ASC) TblMin
UNION
select * from (
select top 1 CITY, LEN(city) City_Length from STATION order by City_Length desc, City ASC) TblMax
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SELECT MAX(salary) FROM employees;
SELECT id, MAX(salary) FROM employees GROUP BY id;
SELECT t1.*
FROM employees t1
INNER JOIN (
SELECT id, max(salary) AS salary FROM employees GROUP BY id
) t2 ON t1.id = t2.id AND t1.salary = t2.salary;
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SELECT max(MY_COLUMN) FROM my_table;
SELECT MY_ID, max(MY_COLUMN) FROM my_table GROUP BY ID; -- Max by MY_ID
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● SELECT first-name, MAX(salary)
FROM department d LEFT OUTER JOIN employee e ON (d.department_id = e.department_id)
GROUP BY department_id;