find max value in mysql code example

Example 1: mysql get max value and id

SELECT a.id, a.rev, a.contents
FROM YourTable a
INNER JOIN (
    SELECT id, MAX(rev) rev
    FROM YourTable
    GROUP BY id
) b ON a.id = b.id AND a.rev = b.rev

Example 2: mysql max()

USE world;
SELECT MAX(Population) AS 'Maximum Value'
FROM City
WHERE CountryCode = 'THA';

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