如何在mysql查询中找到最小值和最大值

我有一个示例代码： 桌子

和桌子

points(user_id, key, value)
      (1, 'point', 300)
      (2, 'point', 200)
      (3, 'point', 500)
      (4, 'point', 100)
      (5, 'point', 600)

还有我的问题

$sql = "SELECT u.id, u.name, p,value AS point
            FROM users u
            JOIN points p ON ( u.id = p.user_id ) AND p.key = 'point'
            WHERE p.value > 300 AND p.value < 300
            GROUP BY u.id";

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这里已经回答了这个问题。SQL有可以使用的最小（x）和最大（x）运算符SELECT*从用户那里，false等于MAX$sql = "SELECT u.id, u.name, p,value AS point FROM users u JOIN points p ON ( u.id = p.user_id ) AND p.key = 'point' WHERE p.value > 300 AND p.value < 300 GROUP BY u.id";

(2, 'B', 200)
(1, 'A', 300)
(3, 'C', 500)