ตั้งแม็กซ์ความยาวหมายเลข mysql

รหัสตัวอย่าง

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0

mysql ได้แม็กซ์ค่าและตัว

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
0
0

แม็กซ์ความยาวพบใน mysql

SELECT city, max(length(city)) FROM Customers;

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