sql 分组依据重复结果

Question

我正在尝试创建一个带有计数的制造商列表。

这是我的查询

$query = $this->pdo->prepare('SELECT manufacture, count(*) AS count
                                      FROM listed_watches
                                      GROUP BY manufacture');

但是当我这样做时 print_r，它重复了结果。它显示 "manufacture" 和 "count" 但它也显示 [0] 和 [1]，怎么会？

我只想显示[制造]、[计数]

Array
(
    [0] => Array
        (
            [manufacture] => Audemars Piguet
            [0] => Audemars Piguet
            [count] => 2
            [1] => 2
        )

    [1] => Array
        (
            [manufacture] => Bell and Ross
            [0] => Bell and Ross
            [count] => 3
            [1] => 3
        )

    [2] => Array
        (
            [manufacture] => Bulova
            [0] => Bulova
            [count] => 1
            [1] => 1
        )

)

Answer 1

试试这个：

$result = $query->fetchAll(PDO::FETCH_ASSOC);

您可以在初始化连接时默认使用此获取方法：

$pdo_options[PDO::ATTR_DEFAULT_FETCH_MODE] = PDO::FETCH_ASSOC;

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