sql where max value code example

Example 1: sql display max value

SELECT MAX(<numeric column>) FROM <table>;
SELECT MAX(<numeric column>) FROM <table> GROUP BY <other column>;

Example 2: get row from max

SELECT * 
FROM t1 WHERE (id,rev) IN 
( SELECT id, MAX(rev)
  FROM t1
  GROUP BY id
)

Example 3: sql max value in column

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;

Example 4: sql set max value in column

ALTER TABLE dbo.mytable ADD CONSTRAINT CK_HAPPINESS_MAX CHECK (PokemonHappiness <= 10000)

Example 5: mysql find the row ites of the hoghest value at on column

SELECT tt.*
FROM topten tt
INNER JOIN
    (SELECT home, MAX(datetime) AS MaxDateTime
    FROM topten
    GROUP BY home) groupedtt 
ON tt.home = groupedtt.home 
AND tt.datetime = groupedtt.MaxDateTime

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