เลือกเดียวที่แม็กซ์ค่าภาษา sql กลุ่ม

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1
0

N

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

N

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

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