Php MySQL：获取一行和多个相关行-可能吗？

假设我有一个表：“汽车”有3个字段：id、品牌、成本

还有第二个表：“型号”，包含3个字段：id、品牌、型号名称

每个“cars”行可以有多个相关的“models”行

是否可以执行输出如下所示的sql选择

编辑：我使用PHP进行数据库查询

array(
  [0] => array(
     [id] => 1
     [brand] => mercedes
     [cost] => 1000
     [models] => array(
       [0] => array(
         [id] => 1
         [brand] => mercedes
         [model_name] => slk
       )
       [1] => array(
         [id] => 2
         [brand] => mercedes
         [model_name] => clk
       )
       [2] => array(
         [id] => 3
         [brand] => mercedes
         [model_name] => whatever
       )
     )
  )
)

---

您需要向models表添加外键关系，例如

car\u id

。然后：

SELECT * FROM cars JOIN models ON car_id = models.id;

这将输出与您正在寻找的内容类似的内容

假设您使用的是PHP，请使用以下输出：

$query= "SELECT * FROM cars JOIN models ON car_id = models.id";
$r= @mysqli_query($dbc, $query);
while ($row= mysqli_fetch_array($r, MYSQLI_ASSOC)) {
    $carstuff['id']=$row[id];
    $carstuff['brand']=$row[brand];
    $carstuff['cost']=$row[cost];
    $carstuff[$row['models']][]=$row['model_name'];
}

var_dump($carstuff);

请注意，id、品牌和成本会被重复覆盖，但这没关系，因为它们会被相同的信息覆盖。我不太确定代码是否干净，但这是最基本的想法。

试试这个：

查询：

SELECT c.ID, c.brand,c.cost, GROUP_CONCAT(model_name SEPARATOR '","')  as models
, GROUP_CONCAT(m.ID SEPARATOR ',')  as MID
, GROUP_CONCAT(m.brand SEPARATOR '","')  as mbrand
FROM cars c 
LEFT OUTER JOIN model m 
ON m.brand = c.brand
GROUP BY brand;

ID  BRAND       COST    MODELS            MID   MBRAND
1   audi        1000    m11","m22     4,5   audi","audi
1   mercedes    1200    m1","m2","m3      1,2,3 mercedes","mercedes","mercedes

输出：

SELECT c.ID, c.brand,c.cost, GROUP_CONCAT(model_name SEPARATOR '","')  as models
, GROUP_CONCAT(m.ID SEPARATOR ',')  as MID
, GROUP_CONCAT(m.brand SEPARATOR '","')  as mbrand
FROM cars c 
LEFT OUTER JOIN model m 
ON m.brand = c.brand
GROUP BY brand;

ID  BRAND       COST    MODELS            MID   MBRAND
1   audi        1000    m11","m22     4,5   audi","audi
1   mercedes    1200    m1","m2","m3      1,2,3 mercedes","mercedes","mercedes

现在，您可以在php代码中处理模型MID和MBrand （使用）

---

是的，但在这种情况下，我会获得每个车型的完整阵列（完整意味着包含来自汽车和该车型的所有数据），但我希望将所有数据都放在一个阵列中。您如何访问数据库？PHP？