mysql - 是否可以在 mysql 中执行此查询？

Question

假设我有一个名为 students 的表，其中包含所有学生的列表。每个学生可以在另一个表中存储许多类(class)，由学生 ID 标识。

我想做一个查询，从学生表中获取包含学生信息的行，并在一个查询中获取他的所有类(class)。我想要的输出是这样的:

Array
(
    [0] => Array
        (
            [id] => 5
            [firstName] => Bob
            [lastName] => Smith
            [email] => ....
            [courses] => Array
                (
                    [0] => Array
                        (
                            [id] => 30
                            [name] => Test Course
                            [price] => 400
                        )

                    [1] => Array
                        (
                            [id] => 30
                            [name] => Test Course 2
                            [price] => 300
                        )

                )

        )

)

要获取学生的信息，我会执行以下查询:

SELECT * FROM students WHERE something ='something'

要为学生获取类(class)，我会这样做:

SELECT * FROM courses WHERE studentId = '5'

是否可以同时执行这两个查询并获得像上面数组一样的输出，或者我是否必须遍历每个学生并获取其类(class)，然后手动将其附加到数组？

Answer 1

$query = "select * from students inner join courses on studentID = '5' where something  = 'something'"; 
$result = mysql_db_query ($dbname, $query, $link); 
$id = $row[0]; # corresponding to row in students database
$firstName= $row[1]; # corresponding to row in students database
$lastName = $row[2]; # corresponding to row in students database
$email = $row[3]; # corresponding to row in students database
while($row = mysql_fetch_array($result)) {
  echo 'id: '.$row[id];
  echo '<br>';
  echo 'name: '.$row[name];
  echo '<br>';
  echo 'price: '.$row[price];
  echo '<br>';
}