php - php连接两个表

Question

我有两张桌子

表 1 类别

Id    name      img   
1   appliances   
2   books

表2产品

ID  name des  price  cataegory sub  img
1  TV    lcd  125     1        tv

我正在尝试加入表 2 中类别中的两个表，从表 1 中获取名称

它将显示为

ID  name des  price  cataegory sub  img
1  TV    lcd  125  appliances    tv  

这是我的代码

    $sql = "SELECT p.id, 
                   p.name,
                   p.description, 
                   p.price,
                   c.name,
                   p.sub
            FROM products p
            JOIN category c on products p = c.id
            ORDER by p.id
            ";

    if($query =  mysql_query($sql) or die())
    {
        while($result = mysql_fetch_assoc($query))
        {   echo "<tr id='id'>";
            //echo "<td>".$result['img']."</td>";
            echo "<td>".$result['name']."</td>";
            echo "<td>".$result['description']."</td>";
            echo "<td>".$result['price']."</td>";
            echo "<td>".$result['category']."</td>";
            echo "<td>".$result['sub']."</td>";
            echo "</tr>";
        }
    }       ";

Answer 1

FROM products p
        JOIN category c on products p = c.id

它应该是ON p.id = c.id或匹配的参数是什么，即p.cataegory = c.id